Questions
A horizontal ring of radius r = 1/2 m is kept in a vertical constant magnetic field 1 T. The ring is collapsed from maximum area to zero area in 1 s. Then the emf induced in the ring is
detailed solution
Correct option is B
|ε|=BdAdt⇒|ε|=BA2−A1t2−t1⇒|ε|=1π4−0(1−0)⇒ε=π4VTalk to our academic expert!
Similar Questions
The magnetic flux through a coil varies with time t as shown in Fig.
Which graph shown in Fig. best represents the variation of induced emf e in the coil with time t.
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