A geyser is rated '1500 W, 250 V'. This geyser is connected to 250 V mains. Calculate :

(i) the current drawn

(ii) the energy consumed in 50 hours and

(iii) the cost of energy consumed at Rs. 4.20 per kWh.

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Solution

Given, Power of geyser, P = 1500 w
Voltage, V = 250 v
(i) Current, I = $\frac{P}{V}$
I= $\frac{1500}{250}$ = 6A

(ii) Time, t = 50 h Energy,
E = p × t = 1500 × 50 = 75000wh = 75kwh

(iii) Cost per unit of energy = Rs. 4.20 Cost for 75 kwh of energy = 4.20 × 75 = Rs. 315

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Electric Power

Standard X Physics

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A geyser is rated '1500 W, 250 V'. This geyser is connected to 250 V mains. Calculate : (i) the current drawn (ii) the energy consumed in 50 hours and (iii) the cost of energy consumed at Rs. 4.20 per kWh.

Given, Power of geyser, P = 1500 w Voltage, V = 250 v (i) Current, I = PV I=​​​​​​​1500250 = 6A (ii) Time, t = 50 h Energy, E = p × t = 1500 × 50 = 75000wh = 75kwh (iii) Cost per unit of energy = Rs. 4.20 Cost for 75 kwh of energy = 4.20 × 75 = Rs. 315

A geyser is rated '1500 W, 250 V'. This geyser is connected to 250 V mains. Calculate :

(i) the current drawn

(ii) the energy consumed in 50 hours and

(iii) the cost of energy consumed at Rs. 4.20 per kWh.

Given, Power of geyser, P = 1500 w
Voltage, V = 250 v
(i) Current, I = $\frac{P}{V}$
I= $\frac{1500}{250}$ = 6A

(ii) Time, t = 50 h Energy,
E = p × t = 1500 × 50 = 75000wh = 75kwh

(iii) Cost per unit of energy = Rs. 4.20 Cost for 75 kwh of energy = 4.20 × 75 = Rs. 315