Can You Electricity Quiz 1

What does an ammeter measure?

• charge

• current

• potential difference

• resistance

Another resistor is set up as shown. The voltmeter reading is 4.5 V and the ammeter reading is 0.50 A. What happens to the current if the resistor is replaced with a bulb of resistance 8 ohm?

• current increase

• current decrease

• current is the same

An electric circuit contains a resistor in series with a power source. What are the directions of conventional current flow?

• x to y

• y to x

An electric circuit contains a resistor in series with a power source. What are the directions of electron flow?

• x to y

• y to x

Ammeters and voltmeters should be connected in ___________ and ___________ respectively.

• series, series

• parallel, parallel,

• series, parallel

• parallel, series

A circuit is shown to measure the resistance of a resistor. The voltmeter reads 1.5 V and the ammeter reads 0.10 A.

Calculate the resistance of the resistor.

• 0.15 ohms

• 0.067 ohms

• 1.5 ohms

• 15 ohms

To vary the current in a circuit, we can use this component:

• resistor

• bulb

• variable resistor

• ammeter

Adding more resistors in parallel will cause the resistance to ........

• increase

• decrease