Calculating Resistance

Which one has high resistance?

• thin wires

• wide/thick wires

Solve for the total resistance of the circuit shown

• 50 V

• 1970 ohms

• 705 K ohms

• 20 Amps

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

What is resistance measured in?

• Ω (Ohms)

• V (Volts)

• A (Amps)

• W (Watts)

A 3-V battery sends a current of 0.10 A through a light bulb. What is the resistance of the filament of the bulb?

• .033 Ω

• 30 Ω

• .3 Ω

• 300 Ω

Which of the following would be a measurement of Resistance?

• 3 Ω

• 1.7 V

• 23 A

• 67 W

When the resistance in a circuit increases, what happens to the current?

• Current Increases

• Current Decreases

• Current Remains the same

Which of the following is Ohm's Law?

• Current is proportional to Voltage and inversely proportional to resistance.

• Current is proportional to Resistance and inversely proportional to Voltage

• Resistance, Current and Voltage are proportional to each other.

What is the resistance of a 60 watt light bulb operated at 120 volts?

What is the formula for calculating resistance in a circuit?