Circuits review

Which of these describes how charged objects affect each other?

• oppositve charges repel each other

• a positively charged object will repel an uncharged object

• opposite charges attract each other

• similar charges attract each other

A parallel circuit:

• must contain two lamps

• has just one loop

• must contain more than one cell

• has more than one loop

Electric current is measured in:

• amps

• joules

• volts

• newtons

A cell could be made using:

• two pieces of copper and a lemon

• pieces of copper and zinx and a beaker of water

• pieces of plastic and zinc and a lemon

• pieces of copper and zinc and a lemon

A device for measuring current:

• voltmeter

• cell

• ammeter

• resistor

A device that only lets current flow one way through it:

• current

• voltmeter

• diode

• ammeter

• open switch

• closed switch

• cell

• battery

• open circuit

• series circuit

• parallel circuit

• battery

What happens in a series circuit if a lamp breaks?

• everything works fine

• the current stays the same

• the current stops flowing

• the battery also breaks

What is the voltage of two 1.5 V cells connected together?

• 0 V

• 1.5 V

• 3 V

• 4.5 V