Electric Current

Front

What happens when too much electric current flows through an object?

Back

It can cause the object to heat up, potentially leading to a fire.

Front

What is a device that converts chemical energy into electrical energy called?

Back

A battery.

Front

Which of the following is NOT true about power cords?

Back

Power cords are made of plastic covered in metal.

Front

What are metals like copper, aluminum, and gold known for in terms of electrical current?

Back

They are good conductors.

Front

What is the purpose of a circuit breaker in home circuits?

Back

It opens or breaks the circuit when it overheats.

Front

Define electric current.

Back

Electric current is the flow of electric charge, typically measured in amperes.

Front

What is the unit of measurement for electric current?

Back

Ampere (A).

Front

What is the difference between conductors and insulators?

Back

Conductors allow electric current to flow easily, while insulators resist the flow of electric current.

Front

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

Back

A fuse protects the circuit by breaking the connection if the current exceeds a certain level.

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.