3rd term Physics

What is an electric current?

• The rate at which electrons flow

• The current exchange in a country

• the current of a river

Current is measured with what unit?

• Ampere

• Voltage

• Flow

• Candela

1 Ampere = 1 Coulomb of electrons. How many electrons are in one coulomb of electrons

• 6.24 x 10¹⁸

• 6.24 x 10²⁴

• 6.24 x 10¹²

A thousandth (0.001) of an Amp is

• A microampere

• A milliampere

• An ampere

• A voltage

A millionth (0.000001) of an Amp is

• A microampere

• A milliampere

• An ampere

• A voltage

What two things are needed for current to flow?

• An Energy Source

• A closed conducting loop

• An open conducting loop

• A transformer

Two types of currents are

• DC

• AC

• Conducting current

• Overcharged current

List two differences between Alternating current and Direct Current?

What device is used to measure current no higher than 10 Amps?

• A Digital multimeter

• A voltmeter

• A switch

• An alternator

Where first is the electricity in our homes generated?

• A power station

• A substation

• A generator