Question

If the charge of electricity per unit is #20:00 , what is the cost of operating an electrical appliance rated 250 V, 2 A for 6 hours?

Answer 1

Answer:

60 rupees

Explanation:

Given :

• Current drawn by the electric appliance = I = 2 Amperes

• Potential difference = v = 250 volts

• Time taken = t = 6 hours

To find :

• Cost of operating electric appliance at rs. 20

Electrical energy = v×I×t

Electrical energy = 250×2×6

Electrical energy = 3000 wh

1 kwh = 1000 wh

Electrical energy = 3 kwh

1 kwh = 1 unit

=3 units

Cost per unit = rs. 20

Cost of electricity = 3×20

Cost of electricity = rs.60

The cost of electricity is equal to rupees 60