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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A solenoid has 2000 turns wound over a length of 0.3 m. Its cross-sectional area is equal to 1.2 × 10^−3 m^2. Around its central cross-section a coil of 300 turns in wound. If an initial current of 2 A flowing in the solenoid is reversed in 0.25 s, the emf induced in the coil is

A solenoid has 2000 turns wound over a length of 0.3 m. Its cross-sectional area is equal to 1.2 × 10^−3 m^2. Around its central cross-section a coil of 300 turns in wound. If an initial current of 2 A flowing in the solenoid is reversed in 0.25 s, the emf induced in the coil is

a capacitor C and a resistance R are connected across a battery of emf E and internal resistance r as shown in figure. switch Sw is closed at t = 0 A pure conductor L select the correct alternatives.