The electric current I (in amperes) an appliance uses is given by, I=√P/R where P is the power (in watts), and

Question

The electric current I (in amperes) an appliance uses is given by, I=√P/R where P is the power (in watts), and R is the resistance (in ohms). Estimate the current an appliance uses when the power is 160 watts and the resistance is 7 ohms. Round to the nearest tenth.

GPT-5 mini · Answer

I = √(P/R) = √(160/7) ≈ √22.8571 ≈ 4.781.  
Rounded to the nearest tenth, I ≈ 4.8 A.

The electric current I (in amperes) an appliance uses is given by, I=√P/R where P is the power (in watts), and R is the resistance (in ohms). Estimate the current an appliance uses when the power is 160 watts and the resistance is 7 ohms. Round to the nearest tenth.

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