Which of the following statements about the thermodynamic scale is not correct? It is also known as the Kelvin scale. It is a shifted scale from the Celsius scale by a value of 273.16. One degree change in the thermodynamic scale is equivalent to one degree change in the Celsius scale. The zero value of the thermodynamic scale represents the …
In discussing electric fields, the terms ‘electric field strength’, ‘electric potential’ and ‘potential gradient’ are used. Which statement about these terms is correct? Electric potential and potential gradient are both scalar quantities. Electric field strength at a point is the work done in bringing unit positive charge from infinity to the point. The potential gradient at a point is numerically …
A storage battery, used for emergency lighting in the even of a power cut operates on 24V. The battery has negligible internal resistance and is rated at 140 ampere-hour. (a) What is the total energy stored by the battery? (b) What external resistance would have to be connected to the battery if it were to be discharged in 14 hours? …