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

If the voltage is increased and the resistance stays the same, what happens to the current?

Back

The current increases.

Front

How do you calculate voltage?

Back

Voltage (V) can be calculated using the formula: V = Current (I) × Resistance (R).

Front

What is the unit of measure for current?

Back

The unit of measure for current is the ampere (A).

Front

What unit of measure is used for resistance?

Back

The unit of measure for resistance is ohms (Ω).

Front

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

Back

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

Front

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

Back

The current decreases.

Front

What is the formula to calculate resistance?

Back

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

Front

What is the voltage of a circuit with a resistance of 5 Ω and a current of 2 A?

Back

The voltage is 10 V, calculated using V = I × R (V = 2 A × 5 Ω).

Front

What does it mean if a circuit has a high resistance?

Back

A high resistance means that less current will flow for a given voltage.