If the current in an electric bulb drops by 1 % the power decreases by

Current i is being driven through a cell of emf ε and internal resistance r, as shown (i) the cell absorbs energy at rate of εi (ii) The cell stores chemical energy at the rate of (εi−i^2r) (iii) The potential difference across the cell is ε+ir (iv) some heat is produced in the cell Current [...]

Water of volume 2 litre in a container is heated with a coil of 1kW at 27^∘C. The lid of the container is open and energy dissipates at rate of 160J/s. In how much time temperature will rise from 27^∘C to 77^∘C [Given specific heat of water is 4.2kJ/kg degree C] If the current in [...]

A heating coil transforms 100J of electrical energy into heat energy per second. The coil is cut into two halves and both the halves are joined together in parallel to the same source. Now the energy transformed per second will be If the current in an electric bulb drops by 1 % the power decreases [...]

If the current in an electric bulb drops by 1 %, the power decreases by If the current in an electric bulb drops by 1 % the power decreases by December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 ,