When a long copper wire of finite resistance is connected to an ac generator, as

Question

When a long copper wire of finite resistance is connected to an ac generator, as shown in the figure (a),(Figure 1) a certain amount of current flows through the wire. The wire is now wound into a coil of many loops and reconnected to the generator, as indicated in the figure (b).

PART A

Is the current supplied to the coil greater than, less than, or the same as the current supplied to the uncoiled wire?

a)greater than

b)less than

c)the same as

PART B

Choose the best explanation from among the following:

            a)More current flows in the circuit because the coiled wire is an inductor, and inductors tend to keep the current flowing in an ac circuit.

            b)The current supplied to the circuit is the same because the wire is the same. Simply wrapping the wire in a coil changes nothing.

            c)Less current is supplied to the circuit because the coiled wire acts as an inductor, which increases the impedance of the circuit.

When a long copper wire of finite resistance is connected to an ac generator, as shown in the figure (a),(Figure 1) a certain amount of current flows through the wire. The wire is now wound into a coil of many loops and reconnected to the generator, as indicated in the figure (b). PART A Is the current supplied to the coil greater than, less than, or the same as the current supplied to the uncoiled wire? a)greater than b)less than c)the same as PART B Choose the best explanation from among the following: a)More current flows in the circuit because the coiled wire is an inductor, and inductors tend to keep the current flowing in an ac circuit. b)The current supplied to the circuit is the same because the wire is the same. Simply wrapping the wire in a coil changes nothing. c)Less current is supplied to the circuit because the coiled wire acts as an inductor, which increases the impedance of the circuit.

Explanation / Answer

part A ---- ans is (b) less than

Part B----- ans is Less current is supplied to the circuit because the coiled wire acts as an inductor, which increases the impedance of the circuit.

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