Q 12-03-043NEETJEE MainEasy
An electric heater of $1$ kW is used for $2$ hours a day for $30$ days. At ₹$6$ per unit, the cost is
Answer: (D) ₹$360$
Energy $= 1 \times 2 \times 30 = 60$ kWh (units). Cost $= 60 \times 6 = $ ₹$360$.
Solution by Sreeraj P, M.Sc Physics