Resistors LEDs Ohms Voltage Current Parallel Series Electricity

What unit is used to measure voltage?

• Ohms

• Omega

• Volts

• Amps

What unit is used to measure current?

• Ohms

• Omega

• Volts

• Amps

What unit is used to measure resistance?

• Ohms

• Omega

• Volts

• Amps

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

• 12 V

• 21 V

• 4/3 V

• 3/4 V

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

• 1/4 A

• 144 A

• 4 A

• 0.4 A

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

• 1/3 ohms

• 3 ohms

• 27 ohms

• 9 ohms

If a circuit had 4 D-Cell batteries (each 1.5 V) and a lightbulb with resistance of 2 ohms, what is the current that flows through the circuit?

• 2 A

• 3 A

• 6 A

• 8 A

As the voltage increases, the current...

• increases

• decreases

• stays the same

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.
• The same current flows through all three light bulbs.
• It uses a single battery.
• The electrical current is divided between the three light bulbs.

The total resistance in this circuit is 

• 100 ohms
• 450 ohms
• 400 ohms
• 30 ohms