Resistance Review

How to you calculate the total resistance in a series circuit?

• R1 + R2+ R3

• R1 - R2 - R3

• 1/R1 + 1/R2 + 1/R3

• R1 = R2 = R3

What is the total resistance across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

Which resistor will prevent the most current flow?

• 1 Ω

• 100 Ω

• 1000 Ω

• 0.5 Ω

How does resistance affect current?

• less resistance - less current
• more resistance - less current
• more resistance - more current
• resistance does not affect current

Rearrange 'V = IR' to make current (I) the subject

• I = V²R

• I = V/R

• I = R/V

• I=VR

What size resistor would produce a 3A current flow if the voltage was 12V?

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

The total resistance in this circuit is

• 100 Ω

• 450 Ω

• 400 Ω

• 30 Ω

What is current measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

What is resistance measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

The mathematical relationship among Voltage, Current, and Resistance

• Faraday's Law
• Tesla's Law
• Edison's Law
• Ohm's Law