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Explain Ohm's Law and write the formula for calculating resistance.

Question

Explain Ohm's Law and write the formula for calculating resistance.

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Solution

Ohm's Law is a fundamental concept in physics and electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current passing through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them.

Here's how it works:

  1. Voltage (V) is the electrical potential difference between two points in a circuit. It's the force that pushes the current through the circuit.

  2. Current (I) is the rate at which charge is flowing. It's measured in amperes (A).

  3. Resistance (R) is a material's opposition to the flow of electric current. It's measured in ohms (Ω).

The formula for Ohm's Law is: V = I * R

This means that the voltage (V) is equal to the current (I) times the resistance (R).

To calculate resistance, you can rearrange the formula to: R = V / I

This means that the resistance (R) is equal to the voltage (V) divided by the current (I).

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