a circular coil of radius 0.1m has80 turns of wire. If the magnetic field through the coil increase from 0 to2 Tesla in 0.4s and the coil is connected to a 11 ohm resistor,what is the current flow through the resistor during the 0.4s??
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9
Explanation:
NAdB
R.dt
= 80 × πr² × ( 2 - 0 )
11 × 0.4
= 8 A Ans
7
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