Circuits and Currents

Which way do electrons flow in a circuit?

• From right to left

• From left to right

• From a positive charge to a negative charge

• From a negative charge to a positive charge

A 9 volt battery in a circuit would be an example of this.

• A source

• A conductor

• A switch

• A resistor

When you flip a light switch off, what happens to the circuit?

• It shorts out

• It closes

• It opens

• Nothing

A light bulb would be an example of this in a circuit.

• A sources

• A resistor

• A switch

• An Amp

What unit of measurement is used to measure electrical current?

• Amps

• Voltage

• Ohms

• Watts

A circuit has a source of 9 volts and two resistors. If circuit has a current of 3 amps and one of the resistors has 2 ohms, how many ohms are in the second resistor?

• 3 ohms

• 1 ohm

• 27 ohms

• 6 ohms

Ohms are used to measure this

• Electric Potential

• Electric Resistance

• Electrical Current

• Light energy

What is the difference between a current and a circuit?

• A circuit is measured in volts while a current is measured in ohms

• A circuit contains electricity while a current contains water

• A circuit is how much electricity is in a system while current is how many watts of electricity are in a circuit?

• A circuit is the path electricity follows while current is the flow of electricity

Which of the following are always present in any given circuit? (Select all that apply) ***Be careful***

• A source

• A switch

• A resistor

• Electricity

• A battery

A circuit has a current of 10 amps (I) with three resistors. If resistors A and B both have 5 ohms of resistance and the resistor C has 2 ohms of resistance, then how many volts are in the circuit? **Read me carefully**

• 120v

• 100v

• 10v

• 70v