Physics Tutor in Khalifa City

+91-9958461445

If you live in Khalifa City Abu Dhabi and Physics is becoming difficult for you, then you are on the right page. Many students in Khalifa City study in CBSE, ICSE, IGCSE, IB, A-Level, AP Physics, NEET and IIT JEE, but they struggle because their basic concepts are not clear.

Physics is not only about formulas. Physics is about understanding particles, charge, mass, motion, force, electric field, magnetic field, energy and numerical application. In Class 12 Physics, many questions in Electrostatics, Current Electricity, Magnetism, Modern Physics and Nuclear Physics use particles like proton, neutron, deuteron and alpha particle.

At Kumar Physics Classes, Kumar Sir teaches Physics from basic level to advanced level. If you are living in Khalifa City and you need a good online Physics tutor, you can contact Kumar Sir.

Proton, Neutron, Deuteron and Alpha Particle: Copy-Paste Table

Particle	Symbol	Charge	Mass Approximation	Important Point
Proton	¹H¹ or p	+e	m	Positively charged particle
Neutron	⁰n¹ or n	0	m	Neutral particle, no charge
Deuteron	¹H² or d	+e	2m	Nucleus of deuterium
Alpha Particle	²He⁴ or α	+2e	4m	Helium nucleus

Very Important Correction for Students

Many students get confused between neutron and deuteron.

Correct concept:

Proton: charge = +e, mass = m
Neutron: charge = 0, mass = m
Deuteron: charge = +e, mass = 2m
Alpha particle: charge = +2e, mass = 4m

So remember:

Neutron is neutral.
Deuteron has charge +e.
Alpha particle has charge +2e.

Why These Particles Are Important in Class 12 Physics

In Class 12 Physics, these particles are used in many chapters:

Electrostatics
Electric field and potential
Motion of charged particles
Magnetic field
Cyclotron
Nuclear physics
Radioactivity
Modern physics
Rutherford scattering
Mass defect and binding energy

If a question says proton, then use:

q = +e
m = m

If a question says deuteron, then use:

q = +e
m = 2m

If a question says alpha particle, then use:

q = +2e
m = 4m

If a question says neutron, then use:

q = 0
m = m

Kumar Sir Style Explanation

देखो बेटा, Physics में particle का नाम देखते ही सबसे पहले दो चीजें लिखो:

Charge कितना है?
Mass कितना है?

अगर charge पता है और mass पता है, तो half question वहीं solve हो जाता है.

For example, if a proton and alpha particle are moving in the same electric field, then acceleration is:

a = qE/m

For proton:

ap = eE/m

Kumar Physics Classes provides online Physics tuition for students living in Khalifa City Abu Dhabi. Classes are useful for:

CBSE Physics
ICSE Physics
IGCSE Physics
IB Physics
A-Level Physics
AP Physics
NEET Physics
IIT JEE Physics
School exam preparation
Concept building
Numerical practice

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Exam-Based Physics Tutor Links

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Why Students in Khalifa City Need Kumar Sir

Many students understand theory in school, but they get stuck in numerical questions. The reason is simple: they do not know how to convert the question language into Physics language.

Kumar Sir teaches students how to read the question properly. He tells them what to write first, which formula to use, how to apply sign convention, and how to avoid silly mistakes.

For example, if a question says alpha particle, many students only remember that it is helium nucleus. But in numerical questions, you must immediately write:

q = +2e
m = 4m

If a question says deuteron:

q = +e
m = 2m

If a question says neutron:

q = 0
m = m

This small clarity saves marks in exams.

How Online Physics Classes Work from India to Khalifa City

Kumar Sir teaches online from India, and students in Khalifa City can attend live classes from home. Online classes are very useful because students save travel time and get personal attention.

In online class, Kumar Sir explains:

Concept
Formula
Derivation
Diagram
Numerical
Doubt clearing
Exam tricks
Homework discussion

Students can ask doubts directly. Classes can be planned according to UAE timing.

Contact Kumar Physics Classes

Kumar Physics Classes
Phone / WhatsApp: +91-9958461445
Email: kumarsirphysics@gmail.com
Website: kumarphysicsclasses.com

If you live in Khalifa City Abu Dhabi and Physics is not clear, contact Kumar Sir and start learning Physics with proper concepts, strong basics and regular numerical practice.

Particle	Symbol	Charge	Mass	Nature	Important Properties
Proton	p or ¹H¹	+e	m	Positively charged particle	Present inside nucleus, deflects in electric and magnetic field, acceleration in electric field = eE/m
Neutron	n or ⁰n¹	0	m	Neutral particle	Present inside nucleus, no deflection in electric field, no electric force, important in nuclear reactions
Deuteron	d or ¹H²	+e	2m	Nucleus of deuterium	Contains 1 proton + 1 neutron, charge same as proton, mass double of proton
Alpha Particle	α or ²He⁴	+2e	4m	Helium nucleus	Contains 2 protons + 2 neutrons, heavy and positively charged, less penetrating power, strong ionising power
Beta Particle	β⁻ or e⁻	-e	very small, about m/1836	Fast electron	Emitted in beta decay, high speed, deflects strongly in electric and magnetic field

Kumar Sir Style Short Memory Trick

Proton: charge +e, mass m
Neutron: charge 0, mass m
Deuteron: charge +e, mass 2m
Alpha particle: charge +2e, mass 4m
Beta particle: charge -e, mass almost zero compared to proton

Very Important for Numericals

In electric field:

F = qE

So:

Proton: F = eE
Neutron: F = 0
Deuteron: F = eE
Alpha particle: F = 2eE
Beta particle: F = eE, but direction is opposite to electric field because charge is negative.

In magnetic field:

r = mv/qB

So radius depends on:

mass / charge

Alpha particle has large mass, so radius is usually larger.
Beta particle has very small mass, so it bends very strongly.

20 Conceptual Questions on Proton, Deuteron and Alpha Particle

Kumar Sir Style

1. What is the charge on a proton?

Answer:
Proton has charge:

q = +e

It is positively charged.

2. What is the mass of a proton in numerical questions?

Answer:
In most Physics numericals, proton mass is taken as:

m = m

It is the reference mass.

3. What is a deuteron?

Answer:
Deuteron is the nucleus of deuterium.

It contains:

1 proton + 1 neutron

So its charge is:

q = +e

and mass is approximately:

m = 2m

4. What is an alpha particle?

Answer:
Alpha particle is the nucleus of helium.

It contains:

2 protons + 2 neutrons

So:

q = +2e

mass = 4m

5. Which particle has maximum charge: proton, deuteron or alpha particle?

Answer:
Alpha particle has maximum charge because:

Proton = +e
Deuteron = +e
Alpha particle = +2e

6. Which particle has maximum mass?

Answer:
Alpha particle has maximum mass.

Proton = m
Deuteron = 2m
Alpha particle = 4m

7. In the same electric field, which particle experiences maximum force?

Answer:
Force is:

F = qE

Alpha particle has charge +2e, so it experiences maximum force.

8. In the same electric field, compare acceleration of proton and deuteron.

Answer:
Acceleration:

a = qE/m

For proton:

ap = eE/m

For deuteron:

ad = eE/2m

So:

ad = ap/2

9. In the same electric field, compare acceleration of proton and alpha particle.

Answer:
For proton:

ap = eE/m

For alpha particle:

aα = 2eE/4m

aα = eE/2m

So:

aα = ap/2

10. In the same electric field, compare acceleration of deuteron and alpha particle.

Answer:
For deuteron:

ad = eE/2m

For alpha particle:

aα = 2eE/4m = eE/2m

So both have same acceleration.

11. Why do deuteron and alpha particle have same acceleration in the same electric field?

Answer:
Because their q/m ratio is same.

For deuteron:

q/m = e/2m

For alpha particle:

q/m = 2e/4m = e/2m

So acceleration is same.

12. In the same magnetic field with same velocity, which has maximum radius?

Answer:
Radius:

r = mv/qB

For proton:

rp = mv/eB

For deuteron:

rd = 2mv/eB

For alpha particle:

rα = 4mv/2eB = 2mv/eB

So deuteron and alpha particle have same radius, and both are double of proton.

13. In the same magnetic field with same velocity, compare radius of proton and alpha particle.

Answer:

rp = mv/eB

rα = 4mv/2eB

rα = 2mv/eB

So:

rα = 2rp

14. In a cyclotron, which particle has highest frequency?

Answer:
Cyclotron frequency:

f = qB/2πm

Frequency depends on q/m.

Proton has highest q/m among proton, deuteron and alpha particle.

So proton has highest frequency.

15. Compare cyclotron frequency of proton and deuteron.

Answer:

fp = eB/2πm

fd = eB/2π(2m)

fd = fp/2

So deuteron frequency is half of proton frequency.

16. Compare cyclotron frequency of proton and alpha particle.

Answer:

fp = eB/2πm

fα = 2eB/2π(4m)

fα = fp/2

So alpha particle frequency is half of proton frequency.

17. Why does alpha particle bend less than proton in magnetic field?

Answer:
Alpha particle has larger mass. Its mass is 4m and charge is only 2e.

So its m/q ratio is larger, therefore radius is larger and bending is less.

18. If proton and alpha particle are accelerated through same potential difference, which gets more kinetic energy?

Answer:
Kinetic energy gained:

K = qV

Proton:

Kp = eV

Alpha particle:

Kα = 2eV

So alpha particle gets double kinetic energy.

19. If proton and deuteron are accelerated through same potential difference, which gets more kinetic energy?

Answer:
Both have same charge +e.

So both gain same kinetic energy:

K = eV

20. What is the most important memory table for these particles?

Answer:

Proton: q = +e, mass = m
Deuteron: q = +e, mass = 2m
Alpha particle: q = +2e, mass = 4m

Kumar Sir style:
Question देखते ही पहले charge और mass लिखो. उसके बाद formula लगाओ. Half question वहीं solve हो जाता है.