Some pairs of devices and associated energy changes are given, Find incorrect pair

The cost of energy to operate an industrial refrigerator that consumes 5 kW power working 10 hours per day for 30 days will be (Given that the charge per kWh of energy = ₹4)

A fuse is used in main electric supply as a safety device. Which one of the following statements about the fuse is correct?

Three resistors of resistances 11 Ω, 22 Ω and 33 Ω are connected in parallel. Their equivalent resistance is equal to

What is the difference between a CFL and an LED lamp ? 1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material. 2. The average life span of a CFL is…

Turbines and Dynamos are used to convert which energy to electrical energy?