Verified Solution • 2025–26 Session
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QPages 306-313: Q94: HC Verma: Concepts of Physics - Volume 2 Electromagnetic Induction Pages 306-313: Q94 Solution: The mutual inductance between two coils is 2.5 H. If the…
⚠️ Common Exam Traps & Conceptual Pitfalls
Students often confuse the magnitude of induced emf with its direction, forgetting that the negative sign in Faraday's law ($\mathcal{E} = -M \frac{di}{dt}$) indicates opposition to the change in current (Lenz's Law) rather than a negative voltage value in magnitude problems.
The mutual inductance between two coils is 2.5 H. If the current in one coil is changed at the rate of , what will be the emf induced in the other coil?
Step-by-Step Verified Solution
**Answer:** E = 2.5 V.
**Step-by-Step Explanation:**
E = M(di/dt) = 2.5 _ 1 = 2.5 V [citation:4].
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