Electricity and Magnetism

A large discharge of electricity from the sky due to a build-up of electrons by friction between the clouds is called:

• static electricity

• thunder

• anti-gravitational static discharge

• lightning

Vange is using a 9-volt battery to power a small device with a resistance of 0.2 ohms. What is the current produced by the battery?

• 1.8 amps

• 0.0222 amps

• 45 amps

• 8.8 amps

Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps?

• 1.98 V

• 0.000198 V

• 5,050 V

• 100.0198 V

How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor

• 12 volts
• 24 volts
• 1.3333
• 48 volts

A conductor to transfer electrons.

• What is: the plastic container of a wet cell battery

• What is: the carbon rod in a dry cell battery

• What is: a circuit with 2 or more pathways

Static electricity is the

• electricity created by a balloon

• the same thing as friction

• buildup of electrical charge

Tags

HS-PS1

What symbol is this?

• light

• switch

• resistor

• battery

Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator?

• plastic tubing

• a penny

• copper wire

• gold necklace

Tags

HS-PS1

If an object gains electrons, what charge will the object have?

• positive

• negative

• neutral

• no charge

Tags

HS-PS1

Look at the diagram shown. Explain what will happen if there are two positive charges near each other.

• they will attract

• they will repel

• nothing will happen