What is resistance ? Name two substances which have high resistance and two substances which have low resistance .It's urgent .
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Answer:
The electrical resistance of an object is a measure of its opposition to the flow of electric current
Tungsten,nichrome etc are substances which have high resistance.
fuse wire,copper,etc have low resistance.
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Explanation:
RESISTANCE-the refusal to accept or comply with something.
HIGH RESISTANCE SUBSTANCES- bakelite , porcelain
LOW RESISTANCE SUBSTANCES - aluminium , copper
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