An electric device is rated 2000W, 250V. Calculate the maximum current it can take

Analyze the question The device is rated 2000 W at 250 V. We need the maximum current it can draw, which is the current at its rated power and voltage.

Concept Electrical power is given by:

P = IV

So the current is:

I = P / V

Solution

• P = 2000 W
• V = 250 V

I = 2000 / 250 = 8 A

Answer The maximum current is 8 A, which is option B.

Tip When you see a "rating" like 2000 W, 250 V, think P = IV straight away. Simplify by cancelling zeros first: 2000/250 = 200/25 = 8. This also helps with similar questions, such as finding the resistance with R = V²/P = 250²/2000 = 31.25 Ω.