Circuits and Current - Quick Quiz

Which of these items is not needed to make a working circuit?

• connecting wires

• a switch

• a component such as a bulb

• a cell

Which instrument would you use to measure current?

• an ammeter

• a cell

• a motor

• a voltmeter

One ammeter in this circuit is reading 3A. What is the reading on the other ammeter?

• 1A

• 2A

• 3A

• 4A

A light bulb comes on when a switch is pressed. Which statement is the best explanation for why this happens?

• When you press the switch you make a gap in the circuit

• When you press the switch you close a gap in the circuit

• The switch is made of metal

• The switch turns all the bulbs on or off at once

What describes the amount of electricity flowing in the circuit?

What instrument measures the amount of electricity flowing in the circuit (also called current)?

• ammeter

• voltmeter

• current meter

• a ruler

What is the unit for measuring current?

What do we call it when two or more cells are used together?