Electromagnetic radio wave frequencies
Electric resistance
Power used by a current of one ampere
Voltage
Answer is Wrong!
Answer is Right!
The correct answer is: A. Electromagnetic radio wave frequencies.
A kilohertz (kHz) is a unit of frequency equal to one thousand hertz. It is used to measure the frequency of electromagnetic waves, such as radio waves, microwaves, and light.
Electric resistance is measured in ohms (Ω). Power is measured in watts (W). Voltage is measured in volts (V).