# A resistor is rated for 2.5 kΩ, 1 watt. Determine its maximum voltage and current ratings.

A resistor is rated for 2.5 kΩ, 1 watt. Determine its maximum voltage and current ratings.

### Right Answer is:

50 V, 20 mA

#### SOLUTION

**Given**

R = 2.5 kΩ

P = 1 Watt

Power P = I^{2}R

P = I^{2} × 2500 = V^{2}/2500

**I = 1/√2500 = 20 mA**

**V = √2500 = 50 V**