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CE Predict/Explain When a long copper wire of finite
Chapter 24, Problem 28P(choose chapter or problem)
CE Predict/Explain When a long copper wire of finite resis-tance is connected to an ac generator, as shown in Figure 24–28(a), 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 Figure 24–28(b).(a)Is the current sup-plied to the coil greater than, less than, or the same as the current supplied to the uncoiled wire? (b)Choose the best explanation from among the following:
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.The current supplied to the circuit is the same because the wire is the same. Simply wrapping the wire in a coil changes nothing.Less current is supplied to the circuit because the coiled wire acts as an inductor, which increases the impedance of the circuit.
Questions & Answers
QUESTION:
CE Predict/Explain When a long copper wire of finite resis-tance is connected to an ac generator, as shown in Figure 24–28(a), 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 Figure 24–28(b).(a)Is the current sup-plied to the coil greater than, less than, or the same as the current supplied to the uncoiled wire? (b)Choose the best explanation from among the following:
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.The current supplied to the circuit is the same because the wire is the same. Simply wrapping the wire in a coil changes nothing.Less current is supplied to the circuit because the coiled wire acts as an inductor, which increases the impedance of the circuit.
ANSWER:
Step 1 of 3
When a long copper wire of finite resistance is connected to an ac generator, as shown in part (a) of the figure, 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 part (b) of the figure.
