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Calculate the resistance of an electric blanket that draws 9 A to transform 50 W of energy.
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Calculate the resistance of an electric blanket that draws 9 A to transform 50 W of energy.

User Nikesha
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1 Answer

4 votes

Answer:

The resistance is 0.617Ω.

Step-by-step explanation:

Given that the formulas are V = I × R and P = I × V so when you substitute the V formula into P formula, you will get P = I² × R. Using this formula, you can find the resistance :

P = I² × R

50 = 9² × R

50 = 81 R

50 ÷ 81 = R

R = 0.617Ω (3sf)

User Justin Caldicott
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5.3k points
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