An accumulator with a steady emf of 2 V is connected across a potentiometer wire at 6.732 m If a resistance of 2.5 `Omega` is put in series with the wire find the new position of the null point.
1 Answers
Talk Doctor Online in Bissoy App
A 10 wire fpotentiometer is connected to an accumulator of steady voltage A7.8 m length of it balances the emf of a cell on open circuit When the cell
Correct Answer - 1.14 `Omega`
2 Answers 1 views
The resistance of a potentiometer wire 8 m long is 8 ohm. A high resistance box and a 2-volt accumulator are connected in series with it. What should
Correct Answer - 1992 `Omega`
2 Answers 2 views
An accumulator of emf `2 V` and negligible internal resistance is connected across a uniform wire of length 10 m and resistance `30 Omega` The appropr
Correct Answer - 7.5 m,8.75 m,6.25 m
2 Answers 1 views
A 10 wire potentiometer has a resistance of 10` Omega` and is connected to fan accumulator of 2 V and negligible internal resistance.There are two res
Correct Answer - Put `R_(1)` =1018 `Omega`(1000 times emf of Cd-cell),adust `R_(2)` till no deflection ocurs in the galvanometer , `R_(2)`=972 `Omega`;5.1 m
2 Answers 1 views
A five- wire potentiometer is connected to an accumulator emf 2.2 V and internal resistance 1 `Omega` The potentiometer wire has resistance of 1 `Omeg
Correct Answer - 1.833 V, 3.218 m, 2.39 `Omega`
2 Answers 3 views
A potentiometer wire of length 1000 cm has a resistance of 10 `Omega` It is connected in series with a resistance and fa cell of emf 2 V and of neglig
Correct Answer - 70 `Omega`
2 Answers 1 views
A potentiometer having a wire 10 m long stretched on it, is connected to accumulator havig a steady voltage. A leclanche cell gives a null point at 75
Correct Answer - 825 cm
2 Answers 1 views
A potentiometer wire of length 100 cm has a resistance of `10Omega`. It is connected in series with a resistance and an accumulator of emf 2V and negl
Correct Answer - `790Omega`
2 Answers 1 views
The resistance of a potentiometer wire is `18Omega`. A high resistance box and a 2 V accumulator are connected in series with it. What should be the v
Correct Answer - `1992Omega`
2 Answers 1 views
A battery of emf 2 V and internal resistance `0.5 Omega` is connected across a resistance of `9.5 Omega`. How many electrons pass through a cross-sect
Correct Answer - `1.25xx10^(18)`
2 Answers 1 views