Current, Voltage and Resistance

If there is a current of 2A and a resistance of 24 ohms, what voltage will there be?

• 26 V

• 48 V

• 12 V

• 22 V

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

If the voltage is increased and the resistance stays the same, what will current do?

• Increase

• Decrease

• Stay the same

• X

If the voltage stays the same and resistance is increased, what will current do? 

• Increase

• Decrease

• Stay the same

• X

Based on the graph, which of the following would be true regarding the relationship of voltage and current?

• As voltage increases, current decreases.

• Voltage will not affect current.

• As voltage decreases, current increases.

• As voltage increases, current also increases.

Match the following units with what they measure:

• electric potential difference

• watt

• power

• volt

• electrical resistance

• ohm

• force of a current

• ampere

What is the role of a transformer in an electric circuit?

• To increase or decrease voltage

• To store electrical energy

• To convert AC to DC

• To measure current

What is the primary purpose of a fuse in an electric circuit?

• To increase current

• To decrease voltage

• To protect the circuit from overcurrent

• To store electrical energy

Which of the following is a correct statement about series circuits?

• The voltage is the same across all components

• The current is the same through all components

• The resistance is the same across all components

• The power is the same across all components

Which of the following is a correct statement about parallel circuits?

• The voltage is the same across all branches

• The current is the same through all branches

• The resistance is the same across all branches

• The power is the same across all branches