Physics questions
20027 published questions with worked solutions.
- The potential gradient along the length of a uniform wire is 5 V/m. There are two points on the same wire at a distance of 20 cm...
- The e.m.f of Daniel cells gets balancing on 800 cm length of potential wire. When a 5 , resistance is connected at the terminal...
- The e. m. f. E of the battery is balanced by p. d. across 75 cm of a potentiometer wire. For a standard cell of e. m. f. 1.02 V,...
- A cell of e. m. f. 2 V and negligible internal resistance is connected in series with a potentiometer wire of length 100 cm. The...
- When two cells of e. m. f. 1.5 V and 1.1 V connected in series are balanced on a potentiometer, the balanced length is 260 cm,...
- A potentiometer wire is 10 m long and has a resistance of 2 , /m. It is connected in series with a battery of e. m. f. 3 V and a...
- An electron in the potentiometer wire experiences a force of 2.4 10^ -19 N. The length of the potentiometer wire is 4 m. The e....
- In a potentiometer circuit, there is a cell of e. m. f. 2 volts, internal resistance of 5 , a wire of uniform thickness of length...
- Potential gradient is defined as fall of potential per unit :
- The potential gradient along the length of uniform wire is 15 V/m. what is potential difference between the points which are 20...
- Thermopile is used for
- Which of the following is not reversible ?
- If the cold junction of thermocouple is lowered, then the neutral temperature
- Thermo emf produced in a thermocouple depends on the difference in
- A thermocouple cannot be preferred to use as thermometer above this temperature
- A thermocouple can be used to measure rapidly changing temperature because it has
- Thermopile is used to
- The instrument which is the combination of thermo couple and sensitive galvanometer is
- Thermoelectric pyrometers are used for measuring
- Thermocouple is an arrangement of two different metals to convert