Question

A TV set having a power rating of $200W$ operates for $5$ hours a day. What is the cost of electrical energy required to operate it for a period of $30$ days?The rate of electrical energy is Rs. $3.40$ per kWh.

• A. Rs 680
• B. Rs 17
• C. Rs 600
• D. Rs 102

Answer 1

The correct option is D Rs 102

Here, power $P=200W=200/1000=0.2kW$

Electrical energy loss per day $=0.2\times 5=1kWh$

Thus, the electrical energy loss for 30 days $=1\times 30=30kWh$

Total cost of electrical energy $=30\times 3.40=Rs102$