Electricity and Magnetism

Front

What is a resistor and provide an example?

Back

A resistor is a component that resists the flow of electric current. An example of a resistor is a light bulb.

Front

What happens to the light when switch Q is opened?

Back

The light goes out when switch Q is opened.

Front

What occurs when the switch in a circuit is closed?

Back

When the switch is closed, the light comes on.

Front

Define current electricity.

Back

Current electricity is a stream of electrons moving through a conductor, such as a copper wire.

Front

What is a simple parallel circuit?

Back

A simple parallel circuit is a circuit where two or more components are connected across the same voltage source, allowing multiple paths for current to flow.

Front

What is the unit of electric current?

Back

The unit of electric current is the Ampere (A).

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). It is expressed as V = I * R.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across the same voltage source, allowing multiple paths for current.

Front

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

Back

A switch is used to open or close a circuit, controlling the flow of electricity.

Front

What is the function of a capacitor in a circuit?

Back

A capacitor stores electrical energy temporarily and can release it when needed.