Exam 11: Alternating-Current Circuits

A 10.0- $\Omega$ resistor, 10.0-mH inductor, and 10.0- $\mu$ F capacitor are connected in series with a 10.0-kHz voltage source.The rms current through the circuit is 0.200 A.Find the rms voltage drop across each of the 3 elements.

The primary winding of an electric train transformer has 400 turns and the secondary has 50.If the input voltage is 120V(rms) what is the output voltage?

Determine the rms voltage drop across the inductor in the circuit.

For driving voltage V = Vm sin $\omega$ t, the current through the resistor is:

The average power input to a series alternating current circuit is minimum when:

The graphs below show the phasors $\Delta$ Vmax and Imax for five RLC series circuits.The solid arrows represent the voltage phasors, $\Delta$ V, and the dashed arrows represent the current phasors, Imax.The graph which represents a circuit where the capacitive reactance is greater than the inductive reactance is:

The phase angle between V and I is:

A 60.0-Hz ac generator with a peak voltage of 110 V drives a series RL circuit with R = 10.0 $\Omega$ and L = 10.0 mH.The impedance is:

The inductance of a tuning circuit of an AM radio is 4.00 mH.Find the capacitance of the circuit required for reception at 1200 kHz.

In a typical transmission line, the current I is very small and the voltage V is very large.A unit length of line has resistance R.For a power line that supplies power to 10 000 households, we can conclude that: