With a potentiometer, null points were obtained at 140 cm and 180 cm with cells of emf 1.1 volt and one of unknown value respectively. Calculate the u

Question

With a potentiometer, null points were obtained at 140 cm and 180 cm with cells of emf 1.1 volt and one of unknown value respectively. Calculate the u

With a potentiometer, null points were obtained at 140 cm and 180 cm with cells of emf 1.1 volt and one of unknown value respectively. Calculate the unknown emf.

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Related Questions

The standard oxidation potential potential of zinc is 0.76 volt and of silver is - 0.80 volt. Calculate the emf of the cell : `Zn|underset(0.25 M)(Zn(

2 Answers 9 Views

The emf of the cells obtained by combining zinc and copper electrodes of the Daniell cell with calomel electrodes are 1.083 volt and -0.018 volt respe

2 Answers 7 Views

The standard emf of the cell, `Ni|Ni^(2+)(1.0M)||Ag^(+)(1.0M)|Ag [E^(@)` for `Ni^(2+)//Ni =- 0.25` volt, `E^(@)` for `Ag^(+)//Ag = 0.80` volt]

2 Answers 4 Views

Plasma cells are derived from (A) Memory B-cells (B) Helper T-cells (C) Memory T-cells (D) Cytotoxic T-cells

2 Answers 5 Views

A potentiometer , with a wire of length 10 m, is connected to an accululator of steady voltage. A lenchlanche cell gives a null point at 7.5 m If the

2 Answers 4 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

2 Answers 6 Views

In a method for comparing emfs by a potentiometer a balance point is found to be 50 cm with a Daniel cell of emf 1.1 volt. Where will you get the bala

2 Answers 5 Views

With a certain cell, the balance point is obtained at 60 cm from the zero end of the potentiometer wire. With another cell whose emf differs from that

2 Answers 4 Views

A potentiometer wire has a potential gradient of 0.0025 volt/cm along its length. Calculate the length of the wire at which null-point is obtained for

2 Answers 14 Views

Three identical cells each of emf 2 V and unknown internal resistance are connected in parallel. This combination is connected to a `5 Omega` resistor

2 Answers 9 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - 1.41V

5 views Answered 2023-02-05 15:29