A 0.1m radius conducting ring is placed in a uniform magnetic field that increas
ID: 1483775 • Letter: A
Question
A 0.1m radius conducting ring is placed in a uniform magnetic field that increases at a rate of 4T/s, inducing a current in the ring. A) Use Faraday's law to find the induced EMF. B) if the ring has a resistance of 0.5ohms, what is the induced current? Include the direction. A 0.1m radius conducting ring is placed in a uniform magnetic field that increases at a rate of 4T/s, inducing a current in the ring. A) Use Faraday's law to find the induced EMF. B) if the ring has a resistance of 0.5ohms, what is the induced current? Include the direction.Explanation / Answer
induced EMF = rate of change of flux
induced EMF = rate of change of magnetic field * area
induced EMF = 4 * pi * 0.1^2
induced EMF = 0.1256 V
by ohm's law
V = IR
0.1256 = current * 0.5
current = 0.1312 A
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