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Physics

An electric toaster draws current 8 A in a circuit with 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 ₹ 4.50 per kWh.

Current Electricity

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Answer

Given,

I = 8 A

V = 220 V

t = 2 h

rate = 4.50 per kWh

Cost = ?

From relation,

E = V x I x t

we get,

E = 220 x 8 x 2 = 3520 Wh = 3.52 kWH

As cost of energy for 1 kWh = ₹ 4.50

Therefore, cost of energy for 3.52 kWh = 4.5 x 3.52
= ₹15.84

Hence, cost of electrical energy = ₹15.84

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