NEET2017Physics-Electromagnetic Induction
NEET 2017 Physics Induced EMF MCQ Question
Type: MCQ-numerical-Hard-Class 12
A long solenoid of diameter 0.1 m has 2 × 10⁴ turns per metre. At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to 0 Å from 4 Å in 0.05 s. If the resistance of the coil is 10π² Ω, the total charge flowing through the coil during this time is
A
16 μC
B
32 μC
C
16 π μC
D
32 π μC
Correct Answer
Option B
Detailed Explanation
The induced emf in the coil is given by Faraday's law. The total charge is the integral of current over time, which can be calculated using the emf and resistance.
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