resistance

Which wire will have the least resistance?

• 10 cm

• 20 cm

• 30 cm

• 40 cm

How do you calculate resistance?

• Divide voltage by current

• Divide charge by current

• Multiply current by voltage

• Multiply voltage and current

What is the resistance if the voltage is 10V and the current is 2A?

• 20 Ω

• 5 Ω

• 12 Ω

• 8 Ω

What are the units for resistance?

• Ohms (Ω)

• Voltage (V)

• Amps (A)

• Charge (C)

How do you measure potential difference in a circuit?

• Voltmeter

• Ammeter

• Thermistor

• Battery pack

How does the thickness of a wire affect resistance?

• A thicker wire has more resistance

• A thinner wire has more resistance

• Thickness of a wire does not affect resistance

If the length of a wire increases, the resistance ____________

• a. decreases

• b. increases

• c. stays the same

• d. unknown

What is the resistance if the current is 2A and the voltage is 10V?

• 8 Ω

• 20 Ω

• 12 Ω

• 5 Ω

Which resistor will prevent the most current flow?

• 1 ohm
• 100 ohms
• 1000 ohms
• 0.5k ohms

The total resistance in this circuit is

• 100 ohms

• 450 ohms

• 400 ohms

• 30 ohms