Electric and Magnetic Forces Review

Electric and Magnetic Forces Review

Assessment

Flashcard

Science

7th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a coil of wire, often wrapped around a magnetic core.

2.

FLASHCARD QUESTION

Front

How can you increase the strength of an electromagnet?

Back

You can increase the strength of an electromagnet by increasing the number of coils, using a larger magnetic core, using thicker wire, or increasing the voltage of the power source.

3.

FLASHCARD QUESTION

Front

What is static electricity?

Back

Static electricity is the buildup of electric charges on the surface of an object. It occurs when there is an imbalance between positive and negative charges.

4.

FLASHCARD QUESTION

Front

Which materials are magnetic?

Back

Magnetic materials include iron, cobalt, and nickel. Aluminum is NOT magnetic.

5.

FLASHCARD QUESTION

Front

What is the role of a magnetic core in an electromagnet?

Back

The magnetic core enhances the magnetic field produced by the coil of wire, making the electromagnet stronger.

6.

FLASHCARD QUESTION

Front

What happens when an electric current flows through a wire in a magnetic field?

Back

When an electric current flows through a wire in a magnetic field, it experiences a force that can cause it to move, which is the principle behind electric motors.

7.

FLASHCARD QUESTION

Front

What is the difference between an open circuit and a closed circuit?

Back

An open circuit has a break in the path, preventing current from flowing, while a closed circuit allows current to flow continuously.

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