TRY
An electric oven of resistance 2002
drawn a current of 10A. it works 3
hours a daily. Calculate the weekly
bill when energy is $0.48 per kwh
Hint: P=1?R

$2018.016

Explanation:

Applying,

P = I²R Equation 1

Where P = power, drawn by the oven, I = current drawn by the oven, R = resistance of the oven.

Given: I = 10 A, R = 2002 Ω

Substitute this values into equation 1

P = 10²(2002)

P = 100(2002)

P = 200200 W.

P = 200.2 kW

If the electric oven works 3 hours daily,

Then the total time it works in a week = 3×7 = 21 hours.

E(kWh) = P(kW)×t(h)

E = 200.2×21

E = 4204.2 kWh.

If 1 kWh of energy cost $0.48,

Then, 4204.2 kWh =  $4204.2(0.48) =  $2018.016

true

explanation:

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