Alternating Current NEET MCQs

Before practicing these MCQs, first read the Alternating Current Physics Notes.

Read Alternating Current Notes

Total100

Easy31

Moderate24

Previous Years36

Assertion-Reason9

Quick revision

Main Alternating Current Formulae

Use these before attempting the MCQs. In every vector diagram below, current I is kept on the positive X-axis.

Basic AC

e = E₀ sin ωt

i = I₀ sin(ωt + φ)

E_rms = E₀/√2, I_rms = I₀/√2

Average over half cycle = 2I₀/π

Reactance and Impedance

X_L = ωL = 2πfL

X_C = 1/ωC = 1/(2πfC)

Z = √[R² + (X_L - X_C)²]

tan φ = (X_L - X_C)/R, cos φ = R/Z

Power and Resonance

P_avg = V_rmsI_rms cos φ

At resonance: X_L = X_C, Z = R

f₀ = 1/(2π√LC)

Q = ω₀L/R = 1/(ω₀CR)

Transformer

V_s/V_p = N_s/N_p

For ideal transformer: V_pI_p = V_sI_s

Efficiency = output power/input power

Series RLC Resonance Formulae

X_L = X_C

ω₀ = 1/√LC

f₀ = 1/(2π√LC)

Z_min = R

I_max = V_rms/R

φ = 0, cos φ = 1

P_max = V_rms²/R = I_rms²R

Q = ω₀L/R = 1/(ω₀CR) = (1/R)√(L/C)

Δω = R/L

Δf = R/(2πL)

Q = ω₀/Δω = f₀/Δf

At resonance: V_L = V_C and V_L = V_C = QV_R

Pure R

V and I are in phase.

Pure L

Voltage leads current by 90°.

Pure C

Voltage lags current by 90°.

Series LCR

V_L > V_C

Inductive circuit: resultant V leads I.

V_C > V_L

Capacitive circuit: resultant V lags I.

V_L = V_C

Resonance: net reactance is zero, V and I are in phase.

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Section A - Easy Questions

Question 1 Section A - Easy Questions

Section A - Easy Questions question 1

Correct Answer: Option (1)

Question 2 Section A - Easy Questions

Section A - Easy Questions question 2

Correct Answer: Option (1)

Question 3 Section A - Easy Questions

Section A - Easy Questions question 3

Correct Answer: Option (1)

Question 4 Section A - Easy Questions

Section A - Easy Questions question 4

Correct Answer: Option (1)

Question 5 Section A - Easy Questions

Section A - Easy Questions question 5

Correct Answer: Option (3)

Question 6 Section A - Easy Questions

Section A - Easy Questions question 6

Correct Answer: Option (2)

Question 7 Section A - Easy Questions

Section A - Easy Questions question 7

Correct Answer: Option (2)

Question 8 Section A - Easy Questions

Section A - Easy Questions question 8

Correct Answer: Option (1)

Question 9 Section A - Easy Questions

Section A - Easy Questions question 9

Correct Answer: Option (4)

Question 10 Section A - Easy Questions

Section A - Easy Questions question 10

Correct Answer: Option (1)

Question 11 Section A - Easy Questions

Section A - Easy Questions question 11

Correct Answer: Option (4)

Question 12 Section A - Easy Questions

Section A - Easy Questions question 12

Correct Answer: Option (1)

Question 13 Section A - Easy Questions

Section A - Easy Questions question 13

Correct Answer: Option (3)

Question 14 Section A - Easy Questions

Section A - Easy Questions question 14

Correct Answer: Option (4)

Question 15 Section A - Easy Questions

Section A - Easy Questions question 15

Correct Answer: Option (4)

Question 16 Section A - Easy Questions

Section A - Easy Questions question 16

Correct Answer: Option (2)

Question 17 Section A - Easy Questions

Section A - Easy Questions question 17

Correct Answer: Option (4)

Question 18 Section A - Easy Questions

Section A - Easy Questions question 18

Correct Answer: Option (1)

Question 19 Section A - Easy Questions

Section A - Easy Questions question 19

Correct Answer: Option (3)

Question 20 Section A - Easy Questions

Section A - Easy Questions question 20

Correct Answer: Option (4)

Question 21 Section A - Easy Questions

Section A - Easy Questions question 21

Correct Answer: Option (2)

Question 22 Section A - Easy Questions

Section A - Easy Questions question 22

Correct Answer: Option (3)

Question 23 Section A - Easy Questions

Section A - Easy Questions question 23

Correct Answer: Option (3)

Question 24 Section A - Easy Questions

Section A - Easy Questions question 24

Correct Answer: Option (3)

Question 25 Section A - Easy Questions

Section A - Easy Questions question 25

Correct Answer: Option (3)

Question 26 Section A - Easy Questions

Section A - Easy Questions question 26

Correct Answer: Option (1)

Question 27 Section A - Easy Questions

Section A - Easy Questions question 27

Correct Answer: Option (3)

Question 28 Section A - Easy Questions

Section A - Easy Questions question 28

Correct Answer: Option (2)

Question 29 Section A - Easy Questions

Section A - Easy Questions question 29

Correct Answer: Option (1)

Question 30 Section A - Easy Questions

Section A - Easy Questions question 30

Correct Answer: Option (2)

Question 31 Section A - Easy Questions

Section A - Easy Questions question 31

Correct Answer: Option (4)

Section B - Moderate Questions

Question 1 Section B - Moderate Questions

Section B - Moderate Questions question 1

Correct Answer: Option (4)

Question 2 Section B - Moderate Questions

Section B - Moderate Questions question 2

Correct Answer: Option (4)

Question 3 Section B - Moderate Questions

Section B - Moderate Questions question 3

Correct Answer: Option (3)

Question 4 Section B - Moderate Questions

Section B - Moderate Questions question 4

Correct Answer: Option (2)

Question 5 Section B - Moderate Questions

Section B - Moderate Questions question 5

Correct Answer: Option (3)

Question 6 Section B - Moderate Questions

Section B - Moderate Questions question 6

Correct Answer: Option (1)

Question 7 Section B - Moderate Questions

Section B - Moderate Questions question 7

Correct Answer: Option (1)

Question 8 Section B - Moderate Questions

Section B - Moderate Questions question 8

Correct Answer: Option (3)

Question 9 Section B - Moderate Questions

Section B - Moderate Questions question 9

Correct Answer: Option (4)

Question 10 Section B - Moderate Questions

Section B - Moderate Questions question 10

Correct Answer: Option (3)

Question 11 Section B - Moderate Questions

Section B - Moderate Questions question 11

Correct Answer: Option (4)

Question 12 Section B - Moderate Questions

Section B - Moderate Questions question 12

Correct Answer: Option (2)

Question 13 Section B - Moderate Questions

Section B - Moderate Questions question 13

Correct Answer: Option (3)

Question 14 Section B - Moderate Questions

Section B - Moderate Questions question 14

Correct Answer: Option (3)

Question 15 Section B - Moderate Questions

Section B - Moderate Questions question 15

Correct Answer: Option (2)

Question 16 Section B - Moderate Questions

Section B - Moderate Questions question 16

Correct Answer: Option (3)

Question 17 Section B - Moderate Questions

Section B - Moderate Questions question 17

Correct Answer: Option (4)

Question 18 Section B - Moderate Questions

Section B - Moderate Questions question 18

Correct Answer: Option (1)

Question 19 Section B - Moderate Questions

Section B - Moderate Questions question 19

Correct Answer: Option (3)

Question 20 Section B - Moderate Questions

Section B - Moderate Questions question 20

Correct Answer: Option (3)

Question 21 Section B - Moderate Questions

Section B - Moderate Questions question 21

Correct Answer: Option (1)

Question 22 Section B - Moderate Questions

Section B - Moderate Questions question 22

Correct Answer: Option (2)

Question 23 Section B - Moderate Questions

Section B - Moderate Questions question 23

Correct Answer: Option (1)

Question 24 Section B - Moderate Questions

Section B - Moderate Questions question 24

Correct Answer: Option (3)

Section C - Previous Years NEET Questions

Question 1 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 1

Correct Answer: Option (3)

Question 2 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 2

Correct Answer: Option (3)

Question 3 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 3

Correct Answer: Option (2)

Question 4 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 4

Correct Answer: Option (3)

Question 5 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 5

Correct Answer: Option (3)

Question 6 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 6

Correct Answer: Option (3)

Question 7 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 7

Correct Answer: Option (2)

Question 8 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 8

Correct Answer: Option (1)

Question 9 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 9

Correct Answer: Option (4)

Question 10 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 10

Correct Answer: Option (1)

Question 11 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 11

Correct Answer: Option (3)

Question 12 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 12

Correct Answer: Option (4)

Question 13 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 13

Correct Answer: Option (3)

Question 14 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 14

Correct Answer: Option (1)

Question 15 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 15

Correct Answer: Option (2)

Question 16 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 16

Correct Answer: Option (4)

Question 17 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 17

Correct Answer: Option (4)

Question 18 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 18

Correct Answer: Option (3)

Question 19 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 19

Correct Answer: Option (4)

Question 20 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 20

Correct Answer: Option (3)

Question 21 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 21

Correct Answer: Option (3)

Question 22 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 22

Correct Answer: Option (1)

Question 23 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 23

Correct Answer: Option (1)

Question 24 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 24

Correct Answer: Option (1)

Question 25 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 25

Correct Answer: Option (4)

Question 26 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 26

Correct Answer: Option (1)

Question 27 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 27

Correct Answer: Option (2)

Question 28 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 28

Correct Answer: Option (1)

Question 29 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 29

Correct Answer: Option (3)

Question 30 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 30

Correct Answer: Option (3)

Question 31 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 31

Correct Answer: Option (2)

Question 32 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 32

Correct Answer: Option (3)

Question 33 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 33

Correct Answer: Option (4)

Question 34 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 34

Correct Answer: Option (3)

Question 35 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 35

Correct Answer: Option (3)

Question 36 Section C - Previous Years NEET Questions

Section C - Previous Years NEET Questions question 36

Correct Answer: Option (4)

Section D - Assertion - Reason Type Questions

Question 1 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 1

Correct Answer: Option (4)

Question 2 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 2

Correct Answer: Option (3)

Question 3 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 3

Correct Answer: Option (3)

Question 4 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 4

Correct Answer: Option (1)

Question 5 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 5

Correct Answer: Option (1)

Question 6 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 6

Correct Answer: Option (1)

Question 7 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 7

Correct Answer: Option (3)

Question 8 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 8

Correct Answer: Option (2)

Question 9 Section D - Assertion - Reason Type Questions

Section D - Assertion - Reason Type Questions question 9

Correct Answer: Option (2)