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Class 12 Physics — Chapter 4: Moving Charges and Magnetism
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 12 Physics, Chapter 4 (Moving Charges and Magnetism). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 90.
Sample questions
Q1Easy
Force on charge q moving with v in field B:
A.qv × B✓ correct
B.q/v
C.qB/v
D.qvB²
Why
Lorentz force.
Q2Medium
Field at centre of circular loop (radius R, current I):
A.μ₀I/(2R)✓ correct
B.μ₀I/R
C.2μ₀I/R
D.μ₀IR
Why
B = μ₀I/(2R).
Q3Hard
Field inside long solenoid (n turns/length):
A.μ₀nI✓ correct
B.μ₀I
C.μ₀I/n
D.0
Why
Uniform field B = μ₀nI.
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