A rod 0.667 m long moves at 5 m/s at right angles to a uniform magnetic field of 0.3 T. What e.m.f. is induced across its ends?
Answer and explanation
Correct answer: D. 1 V
- Step 1: Motional e.m.f. .
- Step 2: V.
Answer
1 V.
Why not the others: 0.2 V: the speed was left out. 2 V: the e.m.f. was doubled. 1.5 V: the length of the rod was left out.
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