Questions
Two infinitely long conducting parallel rails are connected through a capacitor C as shown in figure. A conductor of length I is moved with constant speed v0. Which of the following graph truly depicts the variation of current through the conductor with time?
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Correct option is D
Emf across the capacitor is constant and equal to Blv. In steady state, no current flows through the circuit
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An elasticized conducting band r is around a spherical balloon T (figure). Its plane passes through the center of the balloon. A uniform magnetic field of magnitude 0.04 T is directed perpendicular to the plane of the band. Air is let out of the balloon at 100 cm3s-1 at an instant when the radius of the balloon is 10 cm. The induced emf in the band is
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