what is the physics equation connecting current, potential difference, and resistance?

The physics equation that connects current (I), potential difference (V), and resistance (R) is known as Ohm's Law. It is expressed as:

V = I * R

This equation states that the potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is the resistance.

Here's a step-by-step breakdown:

1. Identify the current (I) in the circuit. This is usually measured in amperes (A).

2. Identify the resistance (R) in the circuit. This is usually measured in ohms (Ω).

3. Multiply the current (I) by the resistance (R) to find the potential difference (V). This is usually measured in volts (V).

Remember, this equation assumes that the temperature remains constant. If the temperature changes, the resistance can also change.