Circuits and Ohms Law

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 with the formula: V = I × R.

Front

To calculate voltage, multiply _______ and _________.

Back

current and resistance.

Front

Electricity that flows in a closed path is called a _________.

Back

circuit.

Front

A thicker wire means ____________ in resistance.

Back

a decrease.

Front

What unit is used to measure resistance?

Back

Ohms.

Front

What is the unit of current?

Back

Amperes (A).

Front

What is the unit of voltage?

Back

Volts (V).

Front

What does a circuit need to function?

Back

A circuit needs a power source, a closed path, and a load.

Front

What is a series circuit?

Back

A series circuit is a circuit in which the components are connected end-to-end, so that the current flows through each component in turn.

Front

What is a parallel circuit?

Back

A parallel circuit is a circuit in which the components are connected across common points or junctions, providing multiple paths for the current.