Home
Class 12
PHYSICS
Copper wire is not used as the bridge wi...

Copper wire is not used as the bridge wire in a meter bridge because

A

resistance of copper wire changes due to change in temperature

B

resistance of a copper wire isvery small

C

in case of copper the error due to thermoelectric effect is very great

D

thermoelectric affect sets in at the two ends of a copper

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • KIRCHHOFF'S LAWS AND ELECTRICAL MEASUREMENT

    CHHAYA PUBLICATION|Exercise EXERCISE (Very Short Answer Type Questions )|12 Videos

  • KIRCHHOFF'S LAWS AND ELECTRICAL MEASUREMENT

    CHHAYA PUBLICATION|Exercise EXERCISE ( Short Answer Type Questions - I )|7 Videos

  • KIRCHHOFF'S LAWS AND ELECTRICAL MEASUREMENT

    CHHAYA PUBLICATION|Exercise NCERT EXEMPLAR QUESTIONS WITH ANSWER HINT (MCQ -2)|1 Videos

  • ELEMENTARY PHENOMENA OF ELECTROSTATICS

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIVE|2 Videos

  • LIGHT WAVE AND INTERFERENCE OF LIGHT

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|15 Videos

Similar Questions

Explore conceptually related problems

Write the principle of working of a metre bridge .

Statement I : An alloy like manganin or German silver is used , instead of copper , as the materinal of the wire of a metre bridge . Statement II : The temperature coefficient of reistance is very low for alloys .

A copper wire and steel wire of same diameter and length are connected end to end and a force is applied which stretches their combined length by 1cm. The two wires will have

The effective length of the wire of ametre bridge is , in general , more than 1 cm because of

The resistance in the left and the right gaps of a metre bridge circuit are 3Omega and 2 Omega respectively . For what length of the bridge wire is the null point found if there is no end error ?

The radius of a copper wire is twice that of a steel wire. One end of the copper wire is joined with one end of the steel wire and the same tensile force is applied on them . If the length of the copper wire increases by 1% , what will be the percentage increase in the length of the steel wire? Given Young's modulus of steel is twice that of copper.

The probability of a bomb hitting a target is 0.2. Two direct hits are necessary to destroy a bridge. If six bombs are aimed at the bridge, find the probability that the bridge is destroyed.

Why is it preferred to obtain the null point in a metre bridge between 40 cm and 60cm of the wire ?

Why are the connections between the resistance in a metre bridge made of thick copper strips ?

Which material is used for the metre bridge wire and why ?