Question

Answer this.. ....................​

Answer 1

Answer :

• Energy consumed by the electric bulb = 0.3 kWh
• Total cost of electrical energy = Rs. 0.9 or 90 Paisa

Explanation :

Given that,

• Power of an electric bulb = 0.1kW [ 100 W = 0.1 kW ]

• Given time = 3 hours

Therefore, energy consumed by the electric bulb is

➠ Energy consumed = Power × Time

➠ Energy consumed = 0.1 × 3

➠ Energy consumed = 0.3 kWh

The energy consumed by the bulb is 0.3 kWh.

Therefore, the total cost of electrical energy is,

➠ Total cost = Total units × Cost of each unit

➠ Cost = Rs. 0.3 × 3

➠ Cost = Rs. 0.9 or 90 Paisa

The total cost electrical energy is Rs. 0.9 or 90 Paisa.