Question

Use the following to answer question 5-6 The figure shows a uniform, 3 T magnetic field that is normal to the plane of a conducting, circular loop with a resistance of 1.5 ohms and a radius of 0.024m. The magnetic field is directed out of the paper as show. Note: the area of the non-circular portion of the wire is considered negligible compared to that of the circular loop

5. If the magnetic field is doubled in 0.4s what is the magnitude of the average induced emf in the loop?
a) 1.4 x 10 ^-2 V
b) 2.7 x 10 ^ -2 V
c) 3.2 x 10 ^ -2 V
d) 4.3 x 10 ^ -3 V
e) 4.9 x 10 ^ -2 V

6. If the magnetic field is doubled in 0.4s what is the induced current around the loop?
a) 9.0 x 10 ^ -3 A, clockwise
b) 2.8 x 10 ^ -3 A, clockwise
c) 4.5 x 10 ^ -3 A, clockwise
d) 9.0 x 10 ^ -3 A, counterclockwise
e) 4.5 x 10 ^ -3 A , counterclockwise

Answer 1

The induced emf and current