How is the resistance of a wire affected if: (i) its length is doubled (ii) its radius is doubled?
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(1) If u double the length of the wire, resistance doubles
(2) Resistance would be reduced by 1÷4
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Answer:if the length of the wire gets doubled than resistance will get half of the lenght of the wire.
Explanation: the resistivity gets half due to increase in length of wire as a result resistance gets half .but if we half the length of wire then the restivity gets doubled
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