Question

Doubt:

Answer 1

In a sensitive meterbridge apparatus the bridge wire should possess
a) high resistivity and high temperature coefficient
b)high resistivity and low temperature coeff.
c) low resistivity and high temp.coeff.
d) low resistivity and low temp.coeff.

Answer 2

I have an answer... I think... but is this referring to a Wheatstone bridge?

Answer 3

Lol u took all this time to write this? Anyways Yes meterbridge is an application of wheatstone bridge.

Answer 4

I was going to answer it but I didn't want to seem like an idiot xD
ans=High resistivity and low temperature coefficient.

A Wheatstone bridge is used to measure resistance, even in a high temp. field, as it is calibrated before use. To maintain accuracy, its arm should not be changed during measurement, and a sufficient drop in temp. would be required for more an accurate result.

Answer 5

I generally spent about 10 minutes using my abnormal processing speed to read about Wheatstone bridges... so don't rely heavily on my answer xD But, I think it's B.

Answer 6

I see diff answers over the web.

http://www.meritnation.com/ask-answer/question/in-a-sensitive-meterbridge-apparatus-the-bridge-wire-shou/current-electricity/2703587
https://in.answers.yahoo.com/question/index?qid=20120608075225AAyxtB2

Answer 7

Wait a second :P That yahoo reply looks familiar XD

Answer 8

Yep. Pretty much re-phrased it in a readable manner xD

Answer 9

But it might be D. In order to detect unknown resistance accurately, generally it would make sense for the resistance to be low, along with the temperature.

Answer 10

hmm...

Answer 11

Even Preskill is dubious :O

Answer 12

lolololol xD It's def. D.

If you use rational thought, a Wheatstone bridge balances two legs of the bridge circuit while one leg of which includes the unknown component. Generally, It makes sense for the meterbridge to be of low resistivity and low temperature to maintain accuracy.