Understanding the Relationship

* Power (P): The rate at which energy is transferred in a circuit, measured in watts (W).

* Resistance (R): The opposition to the flow of current, measured in ohms (Ω).

* Current (I): The flow of electrical charge, measured in amperes (A).

Formula

The relationship between power, resistance, and current is given by the following formula:

* P = I² * R

Solving for Current (I)

1. Rearrange the formula:

I² = P / R

2. Substitute the values:

I² = 2 W / 30 Ω

3. Calculate:

I² = 0.0667

4. Find the square root:

I = √0.0667 ≈ 0.258 A

Therefore, the current in the circuit is approximately 0.258 amperes.