The current passing through an inductor having a resistance of 2 Ω and inductance of 2 H increases linearly from 0 A to 8 A in 4 seconds. The total heat energy dissipated by the inductor's resistance in these 4 seconds is:

An electric refrigerator has a power rating of 500 W and is used for 6 hours each day. If the cost of electrical energy is ₹4.00 per kilowatt-hour, what will be the total cost of operating the refrigerator for 30 days?

The energy consumed by a 5 Ω resistor carrying a 20 A current in 10 minutes will be _______.