Electric Circuits Study Guide

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 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

How do you calculate voltage?

• Current X Resistance
• Resistance ÷ Current
• Current ÷ Resistance
• Measure it with a ruler

How do you calculate resistance?

• Voltage X Current
• Current ÷ Voltage
• Voltage ÷ Current
• Current X Amps

What voltage is needed to cause a 50A current flow through a 10Ω resistor?

• 15V

• 500V

• 500 kV

• 0.2V

What word means how much energy is given to / removed from the electrons.

• Current
• Voltage
• Resistance
• Power

What word means how hard it is for electrons to flow through.

• Current
• Voltage
• Resistance
• Power

What word means how fast the electrons flow.

• Current
• Voltage
• Resistance
• Power