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 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.