A cardboard tube is wrapped with two windings of insulated wire wound in opposit

Question

A cardboard tube is wrapped with two windings of insulated wire wound in opposite directions, as in the figure (Figure 1) . Terminals a and b of winding A may be connected to a battery through a reversing switch. State whether the induced current in the resistor R is from left to right or from right to left in the following circumstances.

Part A

The current in winding A is from a to b and is increasing. The current in winding A is from a to b and is increasing. from left to right from right to left

Part B

The current in winding A is from b to a and is decreasing. The current in winding A is from b to a and is decreasing. from left to right from right to left

Part C

The current in winding A is from b to a and is increasing. The current in winding A is from b to a and is increasing. from left to right from right to left

Part A

The current in winding A is from a to b and is increasing. The current in winding A is from a to b and is increasing. from left to right from right to left

Part B

The current in winding A is from b to a and is decreasing. The current in winding A is from b to a and is decreasing. from left to right from right to left

Part C

The current in winding A is from b to a and is increasing. The current in winding A is from b to a and is increasing. from left to right from right to left

Part A

The current in winding A is from a to b and is increasing. The current in winding A is from a to b and is increasing. from left to right from right to left

Part B

The current in winding A is from b to a and is decreasing. The current in winding A is from b to a and is decreasing. from left to right from right to left

Part C

The current in winding A is from b to a and is increasing. The current in winding A is from b to a and is increasing. from left to right from right to left

Part A

The current in winding A is from a to b and is increasing. The current in winding A is from a to b and is increasing. from left to right from right to left

Part B

The current in winding A is from b to a and is decreasing. The current in winding A is from b to a and is decreasing. from left to right from right to left

Part C

The current in winding A is from b to a and is increasing. The current in winding A is from b to a and is increasing. from left to right from right to left

Part A

The current in winding A is from a to b and is increasing. The current in winding A is from a to b and is increasing. from left to right from right to left

Part A

The current in winding A is from a to b and is increasing. The current in winding A is from a to b and is increasing. from left to right from right to left The current in winding A is from a to b and is increasing. from left to right from right to left The current in winding A is from a to b and is increasing. from left to right from right to left The current in winding A is from a to b and is increasing. from left to right from right to left

Part B

The current in winding A is from b to a and is decreasing. The current in winding A is from b to a and is decreasing. from left to right from right to left

Part B

The current in winding A is from b to a and is decreasing. The current in winding A is from b to a and is decreasing. from left to right from right to left The current in winding A is from b to a and is decreasing. from left to right from right to left The current in winding A is from b to a and is decreasing. from left to right from right to left The current in winding A is from b to a and is decreasing. from left to right from right to left

Part C

The current in winding A is from b to a and is increasing. The current in winding A is from b to a and is increasing. from left to right from right to left

Part C

The current in winding A is from b to a and is increasing. The current in winding A is from b to a and is increasing. from left to right from right to left The current in winding A is from b to a and is increasing. from left to right from right to left The current in winding A is from b to a and is increasing. from left to right from right to left The current in winding A is from b to a and is increasing. from left to right from right to left A cardboard tube is wrapped with two windings of insulated wire wound in opposite directions, as in the figure (Figure 1) . Terminals a and b of winding A may be connected to a battery through a reversing switch. State whether the induced current in the resistor R is from left to right or from right to left in the following circumstances.

Part A

The current in winding A is from a to b and is increasing. The current in winding A is from a to b and is increasing. from left to right from right to left

Part B

The current in winding A is from b to a and is decreasing. The current in winding A is from b to a and is decreasing. from left to right from right to left

Part C

The current in winding A is from b to a and is increasing. The current in winding A is from b to a and is increasing. from left to right from right to left Winding A Winding B

Explanation / Answer

A) The induced current in the resistor is directed from right to left

B) The induced current in the resistor is directed from right to left

C) The induced current in the resistor is directed from left to right

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