Home
Class 12
PHYSICS
During an experiment with a metre bridge...

During an experiment with a metre bridge, the galvanometer shows a null point when the jockey is pressed at `40.0 cm` using a standard resistance of `90 Omega`, as shown in the figure. The least count of the scale used in the metre bridge is 1mm. The unknown resistance is

A

`60 pm0.15Omega`

B

`135pm0.56Omega`

C

`60 pm0.25Omega`

D

`135pm0.23Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

In a metre bridge, the gaps are closed by two resistance P and Q and the balance point is obtained at 40 cm . When Q is shunted by a resistance of 10 Omega , the balance point shifts to 50 cm . The values of P and Q are. .

In meter bridge , the balancing length from left is found to be 20 cm when standard connected of 1 Omega is in right gap . The value of unknown resistance is

In a meter bridge, the null point is found at a distance of 40 cm from A. If now a resistance of 12 Omega is connected in parallel with S, the null point occurs at 60 cm from A. Determine the value of R.

Answer the following: (a) Write the principle of working of a metre bridge. (b) In a metre bridge, the balance point is found at a distance I_(1) with resistances R and S as shown in the figure. An unknown resistance X is now connected in parallel to the resistance S and the balance point is found at a distance I_(2) , Obtain a formula for X in terms of I_(1), I_(2) and S .

In a metere bridge, the balance length from left end (standard resistance of 1 Omega is in theright gap) is found to be 20cm the length of Resistance in left gap is (1)/(2)m and radiusis 2mm its specific resistance is

(i) State the principle of working of a meter bridge. (ii) In a meter bridge balance point is found at a distance I_(1) with resistances R and S as shown in the figure. When an unknown resistance X is connected in parallel with the resistance S, the balance point shifts to a distance I_(2) . Find the expression for X in terms of l_(1), l_(2) and S.

Circuit diagram of metre bridge is shown in figure. The null point is found at a distance of 40cm from A. it now a resistance of 12Omega is connected in parallel with S, the null point occurs at 64cm.

A meter bridge setup is shown in the figure. If there is null deflection in galvanometer when length AC = 20 cm, then the value of resistance R is

The figure shows experimental set up of a meter bridge. When the two unknown resistances X and Y are inserted, the null point D is obtained 40 cm from the end A. When a resistance of 10 Omega is connected in series with X, the null point shifts by 10 cm. Find the position of the null point when the 10 Omega resistance is instead connected in series with resistance 'Y'. Determine the value of the resistance X and Y

In a metre bridge the null point is found at a distance of 35 cm from A. If now a resistance of 10Omega is connected in parallel with S, the null point occurs at 50 cm. Determine the values of R and S.