Electric Circuits & Devices

How many paths through which charge can flow would be shown in a diagram of a series circuit?

• one

• two or more

• none

• More information is needed

What is the unit of electric power

• ampere

• volt

• watt

• ohm

Which of the following provides electrical safety

• circuit breaker

• fuse

• grounded plugs

• all of the above

The strength of an electric field depends on the

• amount of charge that produced the field.

• distance from the charge.

• amount of charge on a test charge placed in the field.

• both the first and second choices listed above.

What do electric forces between charges depend on?

• the quantity of charge involved

• how far apart the charges are

• both choices listed above

• none of the above

What type of current is produced by a battery

• parallel current

• alternating current

• direct current

• potential current

The current in a hair dryer measures 15.0 amps. The resistance of the hair dryer is 8 ohms. What is the voltage

• 120V

• 0.5V

• 7V

• 1800V

Most of the circuits in your home are

• series circuits

• parallel circuits

• reversible circuits

• closed circuits

If you know the power rating of an appliance and the voltage of the line it is attached to, you can calculate the current the appliance uses by

• multiplying the voltage by the power.

• subtracting the power from the voltage.

• dividing the voltage by the power.

• dividing the power by the voltage

What is the best term to describe information sent as patterns and codes in the controlled flow of electrons through a circuit?

• electronic signal.

• digital signal.

• analog signal.

• integrated signal.