Electricity and Magnetism Quiz

What is the primary function of an audio console in a broadcast studio?

• Mixes only sound from microphones

• Records video signals

• Converts analog audio and phone calls to a digital output

• Converts digital audio to analog

Which of the following materials is considered ferromagnetic?

• Aluminum

• Plastic

• Copper

• Iron

Who discovered that a current-carrying wire caused a nearby magnetized compass needle to deflect?

• Michael Faraday

• Hans Christian Oersted

• Heinrich Hertz

• James Clerk Maxwell

What device converts mechanical energy to electrical energy?

• Induction coil

• Transformer

• Electric generator

• Electric motor

Which type of electromagnetic wave has the longest wavelength?

• Ultraviolet

• X-rays

• Gamma rays

• Radio waves

What is the relationship between wavelength and frequency?

• Wavelength is directly proportional to frequency

• Wavelength and frequency are unrelated

• Wavelength increases as frequency decreases

• Wavelength is inversely proportional to frequency

Which of the following is a non-ionizing radiation?

• Gamma rays

• X-rays

• Ultraviolet

• Microwaves