- 1(current)
Q. No.A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves:
| 1. | the potential gradients. |
| 2. | a condition of no current flow through the galvanometer. |
| 3. | a condition of cells, galvanometer, and resistances. |
| 4. | the cells. |
Subtopic: Â Meter Bridge & Potentiometer |
 68%
From NCERT
NEET - 2017
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A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite directions. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf of the two cells is:
1. 5 : 4
2. 3 : 4
3. 3 : 2
4. 5 : 1
2. 3 : 4
3. 3 : 2
4. 5 : 1
Subtopic: Â Meter Bridge & Potentiometer |
 68%
From NCERT
NEET - 2016
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- 1(current)
Q. No.
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