1. Loads are connected to a voltage source by [ ? ].
A. batteries
B. switches
C. light bulbs
D. conductors
Answer: D
Conductors are used to transfer electrical current from voltage
sources to loads (devices that convert electrical energy into
heat, light, or motion). 
2. Increasing the voltage applied to a circuit will cause [ ?
].
A. current to increase
B. resistance to increase
C. current to decrease
D. resistance to decrease
Answer: A
Anytime that voltage (electrical pressure) is increased, current
flow in the circuit will also increase.
3. Resistance in a circuit is changed from 5000 ohms to 10
ohms. If voltage remains the same, the current will [ ? ].
A. double
B. stay the same
C. decrease by one-half
D. stop flowing
Answer: C
The resistance of the circuit has been doubled, so current will
decrease by one-half if the voltage remains the same.
4. In Ohm��s Law, E stands for [ ? ].
A. resistance
B. voltage
C. electromotive force
D. both B and C are correct
Answer: D
E stands for Electromotive force, which is the same as voltage.
5. Four light bulbs are connected in a parallel circuit. When
another bulb is connected in parallel with the other bulbs, [ ?
].
A. circuit resistance will increase
B. current draw will increase
C. both A and B are correct
D. neither A nor B are correct
Answer: B
When more loads are added to a parallel circuit, the total
circuit resistance will decrease and the current in the circuit
will increase.
