Question

An electrical toaster draws current 8 A in a circuit with a source of voltage 220 V. It is used for 2 h. Find the cost of operating the toaster if the cost of electrical energy is Rs. 4.50 per kWh. ​

Answer 1

Answer:

Explanation:

Given,

Voltage, v = 220 v

Current, I = 8 A

Time, t = 2 h

Energy, E = Vlt

E = 220 × 8 × 2 = 3520 Wh ⇒ E = 3.52 kwh

Cost of energy = Rs. 4.50 / kwh

∴ Cost of 3.52 kwh of energy = Rs. 4.50 × 3.52 kwh = 15.84