Circuits

Front

What is the main source of current in a circuit?

Back

The main source of current in a circuit is a battery.

Front

What component carries electrical energy to the lightbulb in a circuit?

Back

Wires carry electrical energy to the lightbulb.

Front

If a battery pack is in a complete circuit but the bulb does not light, what could be the reason?

Back

The batteries may be installed incorrectly.

Front

What appliance converts electrical energy to heat energy?

Back

A hair dryer converts electrical energy to heat energy.

Front

Why is plastic used as insulation around the metal wire in a phone charger?

Back

Plastic is an insulator, preventing electrical current from escaping.

Front

What is the role of a circuit in electrical systems?

Back

A circuit provides a path for electrical current to flow.

Front

What is the difference between a series circuit and a parallel circuit?

Back

In a series circuit, components are connected end-to-end, while in a parallel circuit, components are connected across common points.

Front

What happens to the total resistance in a series circuit when more resistors are added?

Back

The total resistance increases when more resistors are added in series.

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 the function of a resistor in a circuit?

Back

A resistor limits the flow of electric current in a circuit.