Magnetic Effects of Current / करंट का चुंबकीय प्रभाव
JEE Main & Advanced
Physics
Magnetic Effects of Current / करंट का चुंबकीय प्रभाव
JEE PYQ-Magnetic Effects Of Current
question_answer
A very long solenoid of radius R is carrying current \[I(t)=kt{{e}^{-\alpha t}}(k>0),\]as a function of time \[(t\ge 0).\]counter clockwise current is taken to be positive. A circular conducting coil of radius 2R is placed in the equatorial plane of the solenoid and concentric with the solenoid. The current induced in the outer coil is correctly depicted, as a function of time, by :- [JEE Main 9-4-2019 Afternoon]