Current Electricity and Circuits

Why is a switch used in a circuit?

• To complete or break a circuit

• To save energy

• To prevent electric shocks

• To make the bulb glow easily

Electric current moves in only one direction.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A conductor is ____________

• Something that allows electric current to flow easily

• Something that limits the flow of electricity

__________ is the positive terminal of an electrical cell.

• Metal disc

• Metal case

• Metal cap

• Metal base

A combination of two or more electric cells is called _______ .

• Electric circuit

• Battery

• Terminals

• None of these

A material which does not allow the electricity to pass through it is _____________ .

• Conductor

• Electric cell

• Insulator

• None of these

Tags

NGSS.MS-PS2-3

An electric cell has _______________ terminals and ___________ filament .

• Three , Two

• Two , Two

• Two , One

Why do electricians wear gloves made of rubber?

• It is soft.

• It is waterproof.

• It is an insulator.

• It is inexpensive.

For electrical energy to flow, there must be a(n) ______.

• good battery

• copper wire

• on/off switch

• closed circuit

In a _________ circuit, the components are arranged with one path for the current.

• series

• parallel