APS - Electricity

Front

What is an electric charge?

Back

An electric charge is a property of subatomic particles that causes them to experience a force when placed in an electromagnetic field. Charges can be positive or negative.

Front

What happens when two like charges are brought close together?

Back

Like charges repel each other.

Front

What happens when two opposite charges are brought close together?

Back

Opposite charges attract each other.

Front

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

Back

F = k * (|q1 * q2| / r^2), where F is the force, k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

Front

What is voltage?

Back

Voltage, or electric potential difference, is the measure of the energy per unit charge available to drive electric current between two points.

Front

What is current in an electric circuit?

Back

Current is the flow of electric charge, measured in amperes (A). It represents how much charge is flowing through a circuit per unit time.

Front

What is resistance in an electric circuit?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in ohms (Ω). It depends on the material, length, and cross-sectional area of the conductor.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R): V = I * R.

Front

What is a conductor?

Back

A conductor is a material that allows electric charges to flow through it easily, such as metals like copper and silver.

Front

What is an insulator?

Back

An insulator is a material that resists the flow of electric charge, such as rubber, glass, and plastic.