Physics questions
20027 published questions with worked solutions.
- In a metrebridge experiment, null point is obtained at 20 cm from one end of the wire when resistance X is balanced against...
- An unknown resistance R_1 is connected in series with a resistance of 10 , . This combination is connected to one gap of a...
- In a metrebridge, the balancing length from the left end (standard resistance of one ohm is in the right gap) is found to be 20...
- Potentiometer is better for measuring the potential difference than the voltmeter because
- Slide wire bridge does not operate on the same principle as the
- In a metrebridge, copper strips are used to
- The potential gradient along the length of uniform wire is 10 V ,m^ -1 . The length of the wire is 1 m. What is the potential...
- With resistances P and Q in the left and right gaps of a metre bridge, the balance point divides the wire in the ratio 1/3. When...
- In a potentiometer experiment, when three cells A, B and C are connected in series, the balancing length is found to be 740 cm....
- A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10^ -7...
- When two cells of e. m. f. 1.5 V and 1.1 V connected in series are balanced on a potentiometer, the balancing length is 260 cm....
- An accumulator of 5 volt is connected through a resistance of 40 , to a potentiometer wire 10 m long and of resistance 10 , . For...
- 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, the...
- A battery of e. m. f. 2 V and internal resistance 2 , is connected to an external resistance 8 , . If the length of the conductor...
- 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...
- An electron in potentiometer wire experiences a force 2.4 10^ -19 N. The length of potentiometer wire is 6 m. The e.m.f. of the...
- A potentiometer consists of a wire of length 4 m and resistance 10 , . It is connected to a cell of e.m.f. 2 V. The potential...
- In a potentiometer experiment of a cell of e.m.f. 1.25 V given balancing length of 30 cm. If the cell is replaced by another...
- A wire of length 100 cm is connected to a cell of e.m.f. 2 V and negligible internal resistance. The resistance of the wire is 3...
- Atul decides to use his bath tub water to generate electric power to run a 60 watt bulb. The bath tub is located at a height of...