ELECTRICITY & MAGNETISM

Resistance is measured in what unit?

• ohms

• amps

• watts

• volts

Current is measured in what unit?

• ohms

• volts

• watts

• amps

• What does the Greek letter Ω,  (i.e. Omega) represent?

• • amps

• • volts

• • watts

• ohms

• Which of the following is NOT a good insulator?

• • rubber

• • wood

• • iron

• plastic

• what is the resistance of a lamp whose current is 6 A and the voltage across it is 120 V?

• • 120 0hm

• • 20 ohm

• • 16 ohm

• 10 ohm

• What electrical symbol is this?

• • Battery

• • Open Switch

• • Closed Switch

• Lightbulb

What electrical symbol is this?

• Battery

• Lightbulb

• Switch

• Motor

What is the difference between a conductor and an insulator?

• An insulator allows electricity to flow through it easily and a conductor does not

• A conductor allows electricity to flow through it easily and an insulator does not.

• An insulator is magnetic and a conductor is not

• A conductor is magnetic and an insulator is not

What happens to the brightness of the light bulbs in a series circuit when you add more lights.

• Each bulb gets dimmer

• Each bulb remains the same

• Half of the bulbs get dimmer

• Each bulb gets brighter

Does this diagram represent a series or parallel circuit?

• parallel circuit

• series circuit