S2 Review 1 - charge, force, energy, potential

Front

What is electric charge?

Back

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

Front

What is the principle of conservation of charge?

Back

The principle of conservation of charge states that the total electric charge in an isolated system remains constant over time.

Front

What is Coulomb's Law?

Back

Coulomb's Law describes the force between two charged objects. It states that the force is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them.

Front

Define electric potential energy.

Back

Electric potential energy is the work done to move a charge from a reference point to a specific point in an electric field.

Front

What is the formula for electric potential (V)?

Back

V = U/q, where V is electric potential, U is electric potential energy, and q is the charge.

Front

What is the relationship between voltage and electric potential energy?

Back

Voltage is the electric potential energy per unit charge. It indicates how much energy a charge will gain or lose when moving through an electric field.

Front

What happens to the force between two charges if the distance is doubled?

Back

According to Coulomb's Law, if the distance between two charges is doubled, the force between them becomes one-fourth of its original value.

Front

How does doubling the charge of two particles affect the force between them?

Back

Doubling the charge of two particles will double the force between them, according to Coulomb's Law.

Front

What is kinetic energy and how is it calculated for charged particles?

Back

Kinetic energy (KE) is the energy of an object due to its motion. For charged particles, KE can be calculated using the formula KE = 1/2 mv^2, where m is mass and v is velocity.

Front

What is the formula for calculating the kinetic energy gained by a charge when accelerated through a potential difference?

Back

The kinetic energy gained by a charge (q) when accelerated through a potential difference (V) is given by KE = qV.