Electric and Magnetic Forces

Front

What is static electricity?

Back

Static electricity refers to electric charges that do not move through a current. It is the buildup of electric charge on the surface of objects.

Front

What happens when like poles of magnets are brought together?

Back

Like poles of magnets repel each other.

Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected. It is represented by field lines that show the direction and strength of the magnetic force.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet that works by combining electric and magnetic forces. It is created by passing an electric current through a coil of wire.

Front

What direction does an electric field that is positive move?

Back

An electric field that is positive moves outward from the charge.

Front

What is the relationship between electric charges and electric fields?

Back

Electric charges create electric fields around them, which exert forces on other charges within the field.

Front

What is the principle of superposition in electric fields?

Back

The principle of superposition states that the total electric field created by multiple charges is the vector sum of the electric fields created by each charge individually.

Front

How do opposite poles of magnets interact?

Back

Opposite poles of magnets attract each other.

Front

What is the formula for calculating the electric force between two charges?

Back

The electric force (F) between two charges can be calculated using Coulomb's Law: F = k * |q1 * q2| / r^2, where k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

Front

What is the role of magnetic fields in electric motors?

Back

Magnetic fields interact with electric currents in motors to produce rotational motion, allowing the motor to function.