Voltage and resistance

Voltage is

• Also called 'potential difference'

• The difference in energy of the electrons leaving and returning a battery

• Measured using a voltmeter

• All of the above

Resistance is

• Measured using an ammeter

• Units are 'volts'

• How difficult it is for electrons to move through an object

• The continuous movement of electrons in a wire

A conductor has _____ resistance. An insulator has ______ resistance.

• Low; high.

• Negative; positive.

• Positive, negative.

• High, low.

Series circuits have ________ resistance. Parallel circuits have _______ resistance.

• Negative, positive.

• High; low.

• Low; high.

• Positive, negative.

The formula for resistance is:

• R = V / I

• R = V I

• R = V - I

• R = I / V

A resistor

• Is the same as resistance

• Is connected to a circuit in parallel

• Is used in a circuit to control the amount of current

• Is not measured in ohms

What does this symbol stand for

• Voltage

• Volts

• Voltmeter

• Visibility

What does this symbol stand for?

• Switch closed

• Resistor

• Fuse

• Switch open

What does this symbol stand for?

• Voltmeter

• Resistor

• Resistance

• Fuse

In a circuit with large resistance, a __________ current will flow.

• Large

• Positive

• Negative

• Small