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

What is the formula to 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 the unit of current?

Back

The unit of current is the Ampere (A).

Front

What is the unit of resistance?

Back

The unit of resistance is the Ohm (Ω).

Front

What is the unit of voltage?

Back

The unit of voltage is the Volt (V).

Front

If the resistance is 10Ω and the current is 2A, what is the voltage?

Back

V = I × R = 2A × 10Ω = 20V.

Front

What happens to current if resistance increases while voltage remains constant?

Back

If resistance increases while voltage remains constant, the current decreases according to Ohm's Law.

Front

What is the relationship between voltage, current, and resistance?

Back

The relationship is defined by Ohm's Law: V = I × R.

Front

How do you calculate resistance using Ohm's Law?

Back

Resistance (R) can be calculated using the formula: R = V ÷ I.

Front

What is the effect of increasing voltage on current in a circuit with constant resistance?

Back

Increasing voltage will increase the current in a circuit with constant resistance, as per Ohm's Law.