Current and Circuits Review

In a circuit diagram, this symbol represents a

• switch

• multimeter

• battery

• globe

Why are Christmas lights wired in parallel?

• It is cheaper to make

• You can make longer strands

• It uses less electricity

• If a light breaks, the others keep working

A higher resistance in a circuit causes a _____________.

• higher voltage

• larger current

• smaller current

• lower voltage

Why is overloading a socket dangerous?

• It consumes too much electricity.

• A lot of energy is wasted.

• Over heating and fire may occur.

• The wires can become entangled.

• open circuit

• series circuit

• parallel circuit

• battery

Tags

NGSS.MS-PS2-3

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

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 device for measuring current:

• voltmeter

• cell

• ammeter

• resistor

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

• current

• voltmeter

• diode

• ammeter