Unit Test — Unit test

Question 1

What happens to an iron bar when it is placed within the coils of a solenoid?

Revolt · Accepted Answer

It becomes a magnet.

Question 2

Which will a positively charged object attract?

Revolt · Accepted Answer

an object that has a negative charge

Question 3

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

Revolt · Accepted Answer

a difference in electric potential

Question 4

How are the current and resistance related when the voltage of a circuit is constant?

Revolt · Accepted Answer

The current is cut in half when the resistance doubles because they are inversely proportional.

Question 5

When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in this circuit?

Revolt · Accepted Answer

The electric charges move from the energy source through the buzzer and back to the energy source.

Unit Test — Unit test Answers