A circular loop of wire with a radius of 14.0 cm and oriented in the horizontal

Question

A circular loop of wire with a radius of 14.0 cm and oriented in the horizontal xy-plane is located in a region of uniform magnetic field. A field of 1.3 T is directed along the positivez-direction, which is upward.

Part A

If the loop is removed from the field region in a time interval of 3.0 ms , find the average emf that will be induced in the wire loop during the extraction process.

Express your answer using two significant figures.

Part B

If the coil is viewed looking down on it from above, is the induced current in the loop clockwise or counterclockwise?

Explanation / Answer

r = 14 cm , B =1.3 T, t = 3ms

From faradays law indcued emf = -d(phi)/dt = AB/t

V = (3.14*0.14*0.14*1.3)/(0.003)

V = 27 V

(b) From fleming right hand rule induce current in loop is counterclockwise

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