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 as V = I × R.

Front

How do you calculate voltage?

Back

Voltage (V) can be calculated using the formula: V = I × R, where I is the current in amperes and R is the resistance in ohms.

Front

What is current?

Back

Current is the flow of electric charge, measured in amperes (A). It represents how fast the electrons are flowing through a conductor.

Front

How do you calculate resistance?

Back

Resistance (R) can be calculated using the formula: R = V ÷ I, where V is the voltage in volts and I is the current in amperes.

Front

What is resistance?

Back

Resistance is a measure of how difficult it is for electrons to flow through a material. It is measured in ohms (Ω).

Front

What is the unit of current?

Back

The unit of current is the ampere (A).

Front

What is the unit of voltage?

Back

The unit of voltage is the volt (V).

Front

What is the unit of resistance?

Back

The unit of resistance is the ohm (Ω).

Front

If a circuit has a voltage of 500V and a current of 50A, what is the resistance?

Back

Resistance (R) = Voltage (V) ÷ Current (I) = 500V ÷ 50A = 10Ω.

Front

What does a higher resistance mean in a circuit?

Back

A higher resistance means it is more difficult for current to flow through the circuit.