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- 1. Multiple Choice
A circuit that has two or more separate branches for current is a _____.
parallel circuit
series circuit
circuit diagram
electron circuit
- 2. Multiple Choice
The statement, current is equal to the voltage difference divided by the resistance, is known as _____.
Ohm's Law
Newton's Law
Einstein's equation
Faraday's Law
- 3. Multiple Choice
a static discharge differs from an electric current in that a static discharge _____.
is a flow of electrons
lasts for only a fraction of a second
results because a force is exerted on the electrons
involves the movement of ions as well as electrons
- 4. Multiple Choice
Electric charge that has accumulated on an object is referred to as
current electricity
circuit electricity
static electricity
current electricity
- 5. Multiple Choice
Resistance is measured in a unit called the _____.
ampere
ohm
volt
coulomb
- 6. Multiple Choice
The rate at which an electrical device converts energy from one form to another is called _____.
electrical energy
electrical resistance
electrical power
voltage regulation
- 7. Multiple Choice
A path that allows only one route for a current is called a _____.
series current
parallel current
parallel circuit
series circuit
- 8. Multiple Choice
Which of the following is the correct relationship among power, current, and voltage?
P=I/V
V = P x I
P = I x V
Ω = P x I
- 9. Multiple Choice
A television that requires an average of 0.40 ampere of current is operated on a 120-volt service for 5.0 hours. How much energy is used?
1.5 kWh
0.15 kWh
0.24 kWh
0.67 kWh
- 10. Multiple Choice
One source of constant electric current is a _____.
switch
transformer
dry cell
coulomb
- 11. Multiple Choice
A material through which electrons do not move easily is a(n) _____.
transformer
insulator
conductor
fuse
- 12. Multiple Choice
Lightning is _____.
a very large discharge of static electricity
a buildup of neutrons
a low voltage electric current
harmless
- 13. Multiple Choice
The voltage _____ as current moves through a circuit.
remains the same
varies
doubles
increases
- 14. Multiple Choice
Which of the following is a device designed to open an overloaded circuit and prevent overheating?
transformer
magnet
resistor
circuit breaker
- 15. Multiple Choice
Which of the following is a conductor?
glass
wood
tungsten
plastic
- 16. Multiple Choice
Resistance in wires causes electrical energy to be converted into which from of energy?
chemical energy
nuclear energy
thermal energy
sound
- 17. Multiple Choice
An object becomes positively charged when which of the following occurs?
loses electrons
loses protons
gains electrons
gains neutrons
- 18. Multiple Choice
Which of the following does NOT provide a voltage difference in circuit?
wet cell
wires
electrical outlet
dry cell
- 19. Multiple Choice
A commonly used unit for electrical energy in which of the following?
kilowatt-hour
ampere
ohm
newton
- 20. Multiple Choice
Which of the following is the rate at which appliances use electrical energy?
power
current
resistance
speed
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