A sinusoidal ac voltage source in a circuit produces a maximum voltage of 11.2 V and an rms current of 7.80 mA . For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Current in a personal computer. Part A.  Find the voltage amplitude. Express your answer in volts.   Part B. Find the current amplitude. Express your answer in milliamperes.   Part C. Find the rms voltage of this source. Express your answer in volts.

The value of the rms current is most nearly A. 154 mA The current in the circuit is given by i(t) = I cos[(9580 rad/s)}), where I is the amplitude current. The voltage amplitude of the AC source is 112 V. B. 272 mA C. 384 mA D. 121 mA E. 334 mA R = 335 N C = 0.625 µF L = 75.8 mH

A 2.6-k resistor and a 4.0-μF capacitor are connected in series to an ac source. Part A Calculate the impedance of the circuit if the source frequency is 55 Hz. Express your answer to two significant figures and include the appropriate units. Z = Submit Part B Z = ША Submit Value Request Answer Calculate the impedance of the circuit if the source frequency is 10000 Hz. Express your answer to two significant figures and include the appropriate units. Value Units Request Answer ? Units ?

Consider the RLC series circuit shown in the figure below where R = 420Ω, L = 75 mH, and C = 0.750 µF. The current in the circuit is given byi(t) = I cos[(9050 rad/s)t], where I is the amplitude current. Find the phaseshift between the source voltage relative to the current in the circuit.