Lab: Magnetic and Electric Fields — Unit test Answers

Which statement correctly describes Earth’s magnetic field?

Potential difference is measured in which units?

How does increasing the distance between charged objects affect the electric force between them?

Aretha measures a circuit at 110 V and 240 . Using Ohm’s law, what can she calculate for the circuit?

An object that is made of which material is likely to be attracted to a magnet?

What is required for an electric charge to flow through a wire?

What causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?

Georgia moves an unattached piece of wire back and forth over a magnet. Which best explains what will happen?

Which parts of an electric generator are connected?

The diagram shows a coiled wire that carries an electrical current.

What is the resistance of a clock if it has a current of 0.30 A and runs on a 9.0-V battery?

Tisa makes a diagram to organize her notes about charging objects.

Which device manages the flow of current in an electric circuit?

In a movie, a character cuts a wire, which stops the countdown timer of a bomb. What does cutting the wire do to the circuit?

Cora, an electrician, wraps a copper wire with a thick plastic coating. What is she most likely trying to do?

Nina is working with electricity and shortens the wires through which the current is flowing. What is Nina most likely trying to accomplish?

What is an advantage of series circuits?

Ohm’s law describes the relationship between which quantities?

Which will a positively charged object attract?

The image shows the electric field lines around two charged particles.