A cardboard tube is wrapped with two windings of insulated wire, as shown in the

Question

A cardboard tube is wrapped with two windings of insulated wire, as shown in the figure (Figure 1) .

(FIG1) http://session.masteringphysics.com/problemAsset/1264156/2/yg.21.50.jpg


A) Is the induced current in the resistor R directed from left to right or from right to left if the current in winding A is directed from a to b and is increasing ?
(pick one)

1.The induced current in the resistor is directed from right to left.

2.The induced current in the resistor is directed from left to right.

3.There is no induced current in the resistor .


B) Is the induced current in the resistor R directed from left to right or from right to left if the current in winding A is directed from b to a and is decreasing ?
(pick one)



1.The induced current in the resistor is directed from right to left.

2.The induced current in the resistor is directed from left to right.

3.There is no induced current in the resistor .


C) Is the induced current in the resistor R directed from left to right or from right to left if the current in winding A is directed from b to a and is increasing ?
(pick one)


1.The induced current in the resistor is directed from right to left.

2.The induced current in the resistor is directed from left to right.

3.There is no induced current in the resistor .

D) Is the induced current in the resistor R directed from left to right or from right to left if the current in winding A is directed from b to a and is constant ?
(pick one)

1.The induced current in the resistor is directed from right to left.

2.The induced current in the resistor is directed from left to right.

3.There is no induced current in the resistor .

Explanation / Answer

2 2 1 3

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