Resistance in Electrical Circuits

If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance

• 12Ω

• 6Ω

• 24Ω

• 0.167Ω

If a circuit has two resistors in series both are 4Ω, what is the total resistance of the circuit?

• 1Ω

• 2Ω

• 4Ω

• 8Ω

If a circuit has two resistors in parallel both are 4Ω, what is the total resistance of the circuit?

• 1Ω

• 2Ω

• 4Ω

• 8Ω

What effect do electrons flowing through a resistor have on the resistor.

• make it glow

• reduce it's resistance

• increase it's resistance

• heat it up

What is the unit of resistance

• Ohm

• Home

• Amp

• Camp

in which circuit is the lamp brightest

• 1

• 2

• 3

• All the same

in which circuit is the lamp brightest

• 1

• 2

• 3

• All the same

As the length of a wire increases, the resistance of the wire will

• increase

• decrease

• stay the same

As the diameter of a wire increases, the resistance of the wire will

• increase

• decrease

• stay the same

Which resistor has the biggest voltage across it?

• 2 Ω

• 3 Ω

• 4 Ω

• all have the same