CE Predict/Explain 24.29 Part A When a long copper wire of finite resistance is
ID: 1778805 • Letter: C
Question
CE Predict/Explain 24.29 Part A 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 Is the current supplied to the coil greater than, less than, or the same as the current supplied to the uncoiled wire? greater than less than the same as Submit My Answers Give Up Part B Choose the best explanation from among the following: Less current is supplied to the circuit because the coiled wire acts as an inductor, which increases the impedance of the 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 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 Submit My Answers Give Up Figure 1 of 1 Continue (alExplanation / Answer
When current is passed through the uncoiled wire, the impedance offered by the circuit is equal to resistance of the wire. But when the wire is coiled it acts as inductor which opposes the change in the current. Now, impedece of the circuit increases and hence the current decreases.
A) Less than
B) Less current is supplied to the circuit because the coiled wire behaves as an inductor which increases the impedance.