Circuits and Ohms Law

Front

What is a circuit?

Back

A circuit is a closed loop that allows electric current to flow through it.

Front

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

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 current to divide among them.

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 voltage in a circuit?

Back

Voltage can be calculated using the formula V = I × R, where V is voltage, I is current, and R is resistance.

Front

What is resistance?

Back

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

Front

What is the unit of current?

Back

The unit of current is the ampere (A).

Front

What is the role of a battery in a circuit?

Back

A battery provides the voltage needed to push electric current through the circuit.

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 a series circuit.

Front

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

Back

The total resistance decreases when more resistors are added in a parallel circuit.

Front

What is the formula to calculate total resistance in a parallel circuit?

Back

The formula for total resistance (R_total) in a parallel circuit is 1/R_total = 1/R1 + 1/R2 + 1/R3 + ...