Question

An electric iron has a rating of 750 watt and 220v calcuate the current and resistance

Answer 1

Explanation:

Given : 750 P,220 V

To find : Current (I)and Resistence (R)

Sol: P = V² ÷ R

750 = 220 x 220 ÷ R

750÷220 = 220 ÷ R

3.4090 = 220 ÷ R

3.4090 x 220 = R

749.98 = R

Therefore, R = 749.98Ω.

P = V x I

750 = 220 x I

750÷220 = I

3.4090 = I

Therefore, I is 3.4090 A.

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