# Electricity Exam: Trivia Questions! Quiz

50 Questions | Total Attempts: 1992  Settings  Related Topics
• 1.
In a wave, the number of oscillations per second is its
• A.

Voltage

• B.

Spectrum

• C.

Wavelength

• D.

Frequency

• 2.
The distance covered by one complete wave (or one complete cycle) is called
• A.

Voltage

• B.

Capacitance

• C.

Wavelength

• D.

Frequency

• 3.
Frequency is
• A.

The number of oscillations per second

• B.

Measured in Hertz

• C.

An indicator of how rapidly current is changing

• D.

All of the above

• E.

None of the above

• 4.
The unit for #times/sec is
• A.

Hertz

• B.

Amps

• C.

Volts

• D.

Ohms

• 5.
A transverse wave is a wave that travels
• A.

Parallel to another wave

• B.

Perpendicularly to another wave

• C.

Faster than another wave

• D.

Slower than another wave

• 6.
Current flowing in only one direction is
• A.

Unpredictable Current (UC)

• B.

Alternating Current (AC)

• C.

Direct Current (DC)

• D.

Detectable Current (DC)

• 7.
In the electromagnetic spectrum, which waveform has the shortest wavelength?
• A.

Gamma Rays

• B.

X-Rays

• C.

Ultraviolet Light

• D.

Infrared Light

• E.

• 8.
In the electromagnetic spectrum, which waveform has the longest wavelength?
• A.

Gamma Rays

• B.

X-Rays

• C.

Visible Light

• D.

Microwaves

• E.

• 9.
All types of electromagnetic waves have the same frequency.
• A.

True

• B.

False

• 10.
In electromagnetic waves, an electric wave moves perpendicularly to a magnetic wave.
• A.

True

• B.

False

• 11.
In the electromagnetic spectrum, put these waveforms in order from most rapid (highest frequency) to slowest (lowest frequency):  radio waves, infrared, microwave, gamma rays, x-rays, ultraviolet light, visible light.
• A.

Radio, infrared, x-ray, gamma, ultraviolet, visible light, microwave

• B.

Gamma, radio, ultraviolet, visible light, microwave, x-ray, infrared

• C.

Gamma, x-ray, ultraviolet, visible light, infrared, microwave, radio

• D.

Radio, microwave, infrared, visible light, ultraviolet, x-ray, gamma

• E.

None of these -- they all have the same frequency

• 12.
Humans can see gamma rays with their eyeballs.
• A.

True

• B.

False

• 13.
Oscillating current is called
• A.

Direct Current (DC)

• B.

Alternating Current (AC)

• C.

Annoying Current (AC)

• D.

Disorganized Current (DC

• 14.
• A.

AC

• B.

DC

• C.

60 Hz

• D.

A and C

• E.

B and C

• 15.
A capacitor is a circuit component that consists of two parallel plates of charge.
• A.

True

• B.

False

• 16.
When is this equation used? REQ = R1 + R2
• A.

When two resistors are connected in parallel

• B.

When two resistors are connected in series

• C.

When two batteries are connected in parallel

• D.

When two capacitors are connected in series

• 17.
When is this equation used? 1/REQ = 1/R1 + 1/R2
• A.

When two resistors are connected in parallel

• B.

When two resistors are connected in series

• C.

When two batteries are connected in parallel

• D.

When two capacitors are connected in series

• 18.
In this circuit diagram, where will most of the current flow and why?
• A.

It will flow through the 2 Ohm resistor because it follows the path of least resistance.

• B.

It will flow through the 10 Ohm resistor because it follows the first path it reaches.

• C.

It will flow through the 50 Ohm reisitor because it follows the path of greatest resistance.

• 19.
Find REQ for this circuit.
• A.

50/3 Ohms

• B.

3/50 Ohms

• C.

120 Ohms

• D.

1/120 Ohms

• 20.
Find REQ for this circuit.
• A.

15/26 KΩ

• B.

6.5 KΩ

• C.

26/15 KΩ

• D.

7.5 KΩ

• 21.
• A.

4,333 Amps

• B.

4.333 Amps

• C.

230 Amps

• D.

0.23 Amps

• 22.
What are these?
• A.

Resistors

• B.

Capacitors

• C.

Batteries

• D.

Lightbulbs

• E.

Transformers

• 23.
What do the stripes indicate?
• A.

Amount of voltage

• B.

Amount of current

• C.

Amount of resistance

• D.

Amount of energy

• E.

Amount of power

• 24.
What is the unit for voltage?
• A.

Ampere

• B.

Joule

• C.

Volt

• D.

Hertz

• E.

Ohm

• 25.
What is the unit for current?
• A.

Ampere

• B.

Joule

• C.

Volt

• D.

Hertz

• E.

Ohm