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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: resistance question in iit 08
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[Post New]30 Apr 2008 00:15:46 IST
    Subject: Re:resistance question in iit 08
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socciboy (45)

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how can the slope of teh curve effect the null pnt man?>
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[Post New]30 Apr 2008 00:24:31 IST
    Subject: resistance question in iit 08
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spideyunlimited (3462)

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slope of graphs equal then only if both decrease by same factor, the null point would remain same.
but the slopes of graphs are not same.
means for given temperature variation, change in resistance wont b same for the two (resistance box, and unknown semi conductor resistance)
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[Post New]30 Apr 2008 00:27:42 IST
    Subject: Re:resistance question in iit 08
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socciboy (45)

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but nowhere is it given that the kknown resistance is decreased by increasing temp! so y compare slope?
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[Post New]30 Apr 2008 01:00:12 IST
    Subject: resistance question in iit 08
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spideyunlimited (3462)

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ufff known resistance in meter bridge is metallic resistance only!
meter bridge is a standard name given to that apparatus
or it wud have a diff name if semi conductors were used.

gudnite :)
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