Electricity and Magnetism

Front

What is a parallel circuit?

Back

A parallel circuit is a type of electrical circuit where components are connected alongside each other, so the same voltage is applied to each component. If one component fails, the others can still operate.

Front

What happens to the brightness of a light bulb in a parallel circuit when other bulbs are removed?

Back

The brightness stays the same because each bulb operates independently.

Front

What is a series circuit?

Back

A series circuit is a type of electrical circuit where components are connected end-to-end, so the same current flows through each component. If one component fails, the entire circuit is broken.

Front

What happens to the brightness of a light bulb in a series circuit when other bulbs are removed?

Back

The brightness increases because the remaining bulb receives the full voltage of the power source.

Front

What is the role of a switch in an electrical circuit?

Back

A switch controls the flow of electricity in a circuit by opening (breaking the circuit) or closing (completing the circuit) the path.

Front

What is the function of a battery in a circuit?

Back

A battery provides the electrical energy needed to push electrons through the circuit.

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) of the conductor. It can be expressed as V = I × R.

Front

How do you calculate current in a circuit?

Back

Current (I) can be calculated using Ohm's Law: I = V / R, where V is voltage and R is resistance.

Front

What is a generator?

Back

A generator is a device that converts mechanical energy into electrical energy.

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in ohms (Ω).