The label on the bottom of an electric kettle indicates that it would draw 3.2 A from a 110-V ac wall socket. Calculate the current amplitude for the electric kettle.

A residential electric water heater is connected to a 220 V/50 Hz power line, drawing 9.0 A of current. With an average power dissipation of 900 W, determine the root mean square (rms) voltage across the water heater's internal resistor.

An extension cord is to be used with a portable electric fan heater. The manufacturers warn against using extension cords. However, if one must be used, they recommend the peak current should never exceed 3.20 A. Determine the maximum root-mean-square current that can be safely passed through the extension chord.

A US corporation manufactured 1000 dishwashers (1400 W at 120 V ) that were initially intended to be sold to US households, however, they now have to be shipped to the middle east so they include a Dual Channel Voltage Converter (110/120V to 220/240V, also can change from 220/240V to 110/120V). The standard household electric power in the Middle East is 240 V while in the United States is 120 V. Calculate the current drawn by the converter (connected to a dishwasher) when plugged into a 240-V line. What is the converter's perceived resistance when connected to 240 V?

An AC voltage source has an emf phasor, as shown in the figure below. The vector shown corresponds to t = 1.5 ms and the vector has done two rotations. Determine the source frequency.

Three-phase electrical systems are suitable for a wide range of applications, including industrial machinery, commercial buildings, and power grids. A three-phase electrical system is made up of three sinusoidal voltage sources, each with a peak voltage of 170 V and a phase difference of 2π/3 rad between them. Calculate the rms potential difference between any two of the phases.

A medical device uses a 0.20 μF capacitor to generate ultrasonic waves. This capacitor is connected to a 20 V AC supply and operates at a frequency of 200 kHz. What is the peak current flowing through the capacitor?

A tuning capacitor in a 20 kHz radio receiver experiences a peak current of 55 mA with an rms voltage of 7.0 V. Determine the capacitance (C) of this tuning capacitor.

In a household dimmer switch circuit, a capacitor is subjected to a peak voltage of 120 V and experiences a peak current of 500 μA at a frequency of 60 Hz. What is the value of the capacitance of this capacitor?

Determine the highest magnitude of current delivered by the emf in the figure below:

A coil of wire has a reactance of 145 Ω at a frequency of 1.25 kHz. Determine the coil inductance.

An AC power source with a variable angular frequency (ω) is connected to an R-L combination, as shown in the figure. Determine the expression of i) the current (I) in the circuit, ii) the voltage across the resistor, and iii) the voltage across the inductor as a function of ω. Hint: Use a phasor diagram.