Problem: In the circuit shown below, the AC generator supplies an EMF of the form ε = 15sin(100t - π/3) volts. A student measures the current to be I = 6 sin(100t) amps. Thus the generator voltage lags the current by π/3 radian (i.e. 60°). The resistance R must be:a. 1.25 Ωb. 2.5 Ωc. 5.0 Ωd. 7.5 Ωe. cannot be determined from the information given.

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Problem Details

In the circuit shown below, the AC generator supplies an EMF of the form ε = 15sin(100t - π/3) volts. A student measures the current to be I = 6 sin(100t) amps. Thus the generator voltage lags the current by π/3 radian (i.e. 60°). The resistance R must be:

a. 1.25 Ω

b. 2.5 Ω

c. 5.0 Ω

d. 7.5 Ω

e. cannot be determined from the information given.

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Our tutors have indicated that to solve this problem you will need to apply the Series LRC Circuits concept. You can view video lessons to learn Series LRC Circuits. Or if you need more Series LRC Circuits practice, you can also practice Series LRC Circuits practice problems.

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