Home › NEET & JEE Physics MCQs › Moving Charges and Magnetism
NEET & JEE · Physics · Class 12

Moving Charges and Magnetism — NEET & JEE Physics MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

30questions
10/14/6easy / medium / hard
₹0no login
Take the Moving Charges and Magnetism test →
Free · your all-India rank after you finish

Sample questions from this chapter

What is the Lorentz force on a charge q moving with velocity v in electric and magnetic fields E and B?
  1. q(E+v×B) ✓
  2. q(E+B×v)
  3. q(v·B+E)
  4. qE+vB
Answer: A. Electric and magnetic forces add vectorially as F=q(E+v×B).
Why not B: Reversing the cross-product order reverses the magnetic-force direction.
Why not C: A scalar dot product cannot be added to the vector electric field.
Why not D: The magnetic contribution requires vector direction and the sine of the included angle.
A +2.00 μC charge moves at 3.00×10⁵ m s⁻¹ perpendicular to a 0.400 T field. What is the force magnitude?
  1. 0.0240 N
  2. 0.120 N
  3. 0.240 N ✓
  4. 2.40 N
Answer: C. F=qvB=(2.00×10⁻⁶)(3.00×10⁵)(0.400)=0.240 N.
Why not A: This is one-tenth of qvB.
Why not B: This introduces an unwarranted factor one-half.
Why not D: This is ten times the product qvB.
A 100-turn circular coil of radius 0.0800 m carries 0.400 A. What is its central field? Use μ₀=4π×10⁻⁷ T m A⁻¹.
  1. 3.14×10⁻⁴ T ✓
  2. 6.28×10⁻⁴ T
  3. 3.14×10⁻⁵ T
  4. 1.00×10⁻⁴ T
Answer: A. B=μ₀NI/(2R)=(4π×10⁻⁷)(100)(0.400)/(0.160)=3.14×10⁻⁴ T.
Why not B: This omits the factor two in the loop-centre denominator.
Why not C: This is ten times smaller than μ₀NI/(2R).
Why not D: This drops the numerical factor π from the evaluated result.

These are 3 of the 30 questions in the test. Take the full chapter test →

Read the chapter first

Every NCERT question in this chapter is solved, free: NCERT solutions — Moving Charges and Magnetism →

Other NEET Physics chapters

Units and MeasurementMotion in a Straight LineMotion in a PlaneLaws of MotionWork Energy and PowerSystems of Particles and Rotational Motion

All 28 chapters →

Questions

How many NEET and JEE questions are there on Moving Charges and Magnetism?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET and JEE Physics chapter test free?

Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.