Current Electricity

What is the flow of electric charges called?

• Voltage

• Resistance

• Electric Current

• Power

What is the unit of charge measured in?

• Coulombs

• Joules

• Amperes

• Volts

According to Ohm's Law, what is the relationship between current and potential difference?

• No Relationship

• Directly Proportional

• Exponential Relationship

• Inversely Proportional

What is the property of a material that determines its resistance?

• Capacitance

• Inductance

• Conductivity

• Resistivity

What is the rate at which energy is transferred in a circuit called?

• Voltage

• Current

• Power

• Resistance

How is potential difference measured in a circuit?

• Ammeter

• Ohmmeter

• Wattmeter

• Voltmeter

What is the resistance of a wire with a resistivity of 1.7 x 10^-8 Ωm, length of 100m, and cross-sectional area of 0.87 x 10^-6 m^2?

• 1.7 Ω

• 3.8 Ω

• 0.5 Ω

• 2.3 Ω

How much energy is dissipated by a resistor with a potential difference of 9.0V, current of 0.23A, and time of 331 seconds?

• 20.7 J

• 45.9 J

• 93.2 J

• 68.7 J

What is the power dissipated by a 32 ohm resistor with a current of 1.4A flowing through it?

• 35.2 W

• 57.8 W

• 22.4 W

• 48.6 W

If a lightbulb has 1.0 A flowing through it, how many electrons will pass through the filament in 1.0 s?

• 6.25 x 10^18 electrons

• 8.75 x 10^18 electrons

• 12.75 x 10^18 electrons

• 10.5 x 10^18 electrons