Which of the following is a conductor?
(a) 1×10-⁸ ohm.m (b) 10¹⁵ ohm.m (c) 1×10-⁶ ohm.m (d) 10¹² ohm.m
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Answer:
For making the element of a heating device, we use an alloy as : <br> (i) its resistivity changes less rapidly with changes in temperature and <br> (ii) it does not oxidise (burn) readily at high temperature. The resistivities of materials
lie in the range of resistivity of alloys. (In fact, material
is nichrome and material
is manganin. We use nichrome for making an element of a heating device).
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Answer:
hi my friend ☺️
the answer is
option c 1×10-6 ohm.m
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