Electricity and Circuits Flashcard

Front

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

Back

A battery serves as a source of energy, providing the electrical power needed for the circuit to function.

Front

What does it mean when a switch is closed in a circuit?

Back

A closed switch allows electricity to flow through the circuit, completing the circuit and enabling devices like lights to operate.

Front

How does increasing battery voltage affect current in a closed circuit?

Back

As voltage increases, current also increases, according to Ohm's Law.

Front

What happens to the current reading on an ammeter when a lamp is added in series?

Back

The current reading decreases because the total resistance in the circuit increases.

Front

What is the function of a power source in a circuit?

Back

A power source provides a steady flow of electrons, which is necessary for the circuit to operate.

Front

What is an open circuit?

Back

An open circuit is a broken circuit where electricity cannot flow due to a gap or break in the path.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow.

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of how much a material opposes the flow of electric current, typically measured in ohms.

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 can be 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 common points, allowing multiple paths for current to flow.