AP EAPCET 25-Aug-2021 Shift 2 Paper

Section: Physics

Question : 115 of 160

Marks: +1, -0

A solenoid has 2000 turns wound over a length of 0.30 m. The area of its cross-section is 1.2×10−3 m. Around its central section, a coil of 300 turns is wound. If an initial current of 2 A in the solenoid is reversed in 0.25 s, the e.m.f induced in the coil is equal to:

6×10−4V
4.8×10−2V
6×10−2V
48kV

Validate

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