S3 Electricity Science

An ammeter is used to measure:

• Voltage

• Current

• Resistance

• Power

A voltmeter is used to measure:

• current

• resistance

• voltage

• power

The unit of current is:

• Ampere

• Volt

• Ohm

• Watt

The rule for current in a series circuit is:

• The current is the same at all points in the circuit.

• The current increases at each component.

• The current decreases at each component.

• The current splits equally at each branch.

We use ________ to measure voltage in a circuit.

• ammeter

• voltmeter

• ohmmeter

• thermometer

The piece of equipment used to measure resistance is:

• Voltmeter

• Ammeter

• Ohmmeter

• Thermometer

If you increase the resistance in a circuit, the current will:

• increase

• decrease

• stay the same

• reverse direction

Copy and complete the following passage filling in the blank spaces with words from the word bank. Some words may be used more than once.

Word bank: series, Voltages, current, add up, parallel, amps, Resistance, ammeter, ohms

We use an __________________ to measure electric current and we measure current in _______________.

• ammeter, amps

• ohms, Resistance

• series, parallel

• Voltages, add up

________________ is the opposition to current flow in a circuit. It is measured in _________________ .

• Resistance, ohms

• Voltage, volts

• Current, amperes

• Power, watts

What instrument is used for measuring current?

• Ammeter

• Voltmeter

• Barometer

• Thermometer