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ECE · Q193

Electromagnetic Field Theory

Engineering and GATE · ECE · question 193

Q193

Two metal rings 1 and 2 are placed in a uniform magnetic field which is decreasing with time their planes perpendicular to the field. If the rings are identical except that ring 2 has a thin air gap in it, which one of the following statement is correct?

A.
No e.m.f. is induced in ring 1
B.
An e.m.f. is induced in both the rings
Answer
C.
Equal Joule heating occurs in both the rings
D.
Joule heating does not occur in either ring

Answer: Option B

Solution

Answer: Option B
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