Home
Class 12
PHYSICS
A resistance R is to be measured using a...

A resistance R is to be measured using a meter bridge. Student chooses the standared resistance S to be `100 Omega`. He finds the null point at `l_(1)=2.9cm`. He is told to attempt to improve the accuracy. Which of the folllowing is a useful way?

A

He should measure `l_(1)` more accurately.

B

He should change S to `1000 Omega` and repeat the experiment.

C

He should chandge S to `3 Omega` and repeat the experiment.

D

He should give up hope of a more accurate measurement with a meter bridge.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A resistance R is to be measured using a meter bridge. Student chooses the standard resistance to be 100 Omega . He finds the null point at I_(1) = 2.9 cm He is told to attempt to improve the accuracy Which of the following is a useful way ?

To find value of unknown resistance by using meter bridge why position of R and S is interchanged ?

In a meterbridge, the null point is found at a distance of 33.7cm from A. If a resistance of 12W is connected in parallel with S, the null points occurs at 51.9cm Determine the values of R and S.

In following meter bridge, when 12 Omega resistance is connected parallel to S null point is obtained at 50 cm from point A. Find value of S.

200 Omega resistor is connected in one of the gaps of the meter bridge. Series combination of X Omega and 50 Omega resistors is connected in the second gap. Here unknown resistance X Omega is kept in a heat bath at a certain temperature. The unknown resistance and its temperature is....... and....... respectively if the balance point is obtained at 50 cm. The total length of the wire of the meter bridge is equal to 1 meter. The resistance of the unknown resistance at 0" "^(@)C temperature is equal to 100 Omega . alpha = 0.5 xx 10^(-3) ""^(@) C^(-1) for the material of the X Omega resistors.

The measurement of an unknown resistance R is to be carried out using Wheatstone bridge as given in the figure below. Two students perform an experiment in two ways. The first students takes R_(2) = 10 Omega and R_(1) = 5 Omega . The other student takes R_(2) = 1000 Omega and R_(1) = 500 Omega . In the standard arm, both take R_(3) = 5 Omega . both find R = (R_(2))/(R_(1)) , R_(3) = 10 Omega within errors.

In an experiment with potentiometer, V_(B) =10V ,R us adjusted to be 50Omega . A student wanting to measure voltage E_(1) of a battery (approx.8V) finds no null point possible. He then diminshes R to 10Omega and is able to locate the null point on the last (4^(th)) segment of the potentiometer. The resistance of the potentiometer wire (R) will be a lt R lt b. Find the value of ((b)/(a)) .

An unknown resistance R_(1) is connected is series with a resistance of 10 Omega . This combination is connected to one gap of a meter bridge, while other gap is connected to another resistance R_(2) . The balance point is at 50 cm Now , when the 10 Omega resistance is removed, the balanced point shifts to 40 cm Then the value of R_(1) is.