Physics 236 Worksheet: Chapter 31, Electromagnetic Induction

1.     Induced voltage is proportional to

a.     magnetic flux

b.      magnetic field times area

c.      magnetic flux times area

d.     the rate of change of magnetic flux

2.     Doubling the number of loops of wire in a coil causes what change in the induced voltage?

a.     The induced voltage is four times as much.

b.      The induced voltage is twice as much.

c.      The induced voltage is not changed.

d.     The induced voltage is one half as much.

3.     The current in the figure below is decreasing. Therefore the induced current in the loop will:

 

 

 

 

 

 

a.     flow clockwise

b.      flow counterclockwise

c.      be zero

d.     (this one hurt my wrist)

4.     In The figure below a conducting rod is moving as shown across conducting rails. The magnetic field is directed into the figure. The induced current in the rectangular loop will:

 

 

 

 

 

a.     flow clockwise

b.      flow counterclockwise

c.      be zero

5.     The induced emf around around a closed path is equal to the rate of change of

a.     magnetic field

b.      magnetic flux

c.      electric field

d.     electric flux

6.     The induced emf around around a closed path is equal to

 

 

 

 

 

 

 

Ans: 1-d, 2-b. 3-b. 4-b, 5-b, 6-c