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Electromagnetic Induction — 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
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Sample questions from this chapter

What is the magnetic flux through a plane area A in uniform field B when the field makes angle θ with the area vector?
  1. BA cosθ ✓
  2. BA sinθ
  3. B/A
  4. BA tanθ
Answer: A. Magnetic flux is the scalar product ΦB=B·A=BA cosθ.
Why not B: Using sine treats θ as the angle with the plane rather than with its normal.
Why not C: Flux grows with area instead of varying inversely with it.
Why not D: The dot product of field and area contains cosine, not tangent.
A 0.200 m² loop is in a 0.500 T uniform field. Its area vector makes 60.0° with the field. What flux passes through it?
  1. 0.200 Wb
  2. 0.100 Wb
  3. 0.0500 Wb ✓
  4. 0.0250 Wb
Answer: C. ΦB=BA cosθ=(0.500)(0.200)(0.500)=0.0500 Wb.
Why not A: This multiplies area alone by an implicit 1 T field.
Why not B: This uses BA and omits cos60°.
Why not D: This applies the one-half angular factor twice.
A square loop of side 0.100 m has its area vector at 45.0° to a 0.100 T field. The field falls uniformly to zero in 0.700 s. What emf magnitude is induced?
  1. 1.01×10⁻³ V ✓
  2. 1.43×10⁻³ V
  3. 7.07×10⁻⁴ V
  4. 1.01×10⁻⁴ V
Answer: A. |ε|=BA cos45°/Δt=(0.100)(0.0100)(0.707)/0.700=1.01×10⁻³ V.
Why not B: This uses BA/Δt and omits cos45°.
Why not C: This divides by 1.00 s instead of the stated 0.700 s.
Why not D: This treats the square's area as 0.00100 m² rather than 0.0100 m².

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Read the chapter first

Every NCERT question in this chapter is solved, free: NCERT solutions — Electromagnetic Induction →

Other NEET Physics chapters

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Questions

How many NEET and JEE questions are there on Electromagnetic Induction?

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.