A piece of wire having resistance 'R' is cut into four equal parts. (a)How does the resistance of each part compared with the original resistance? (b)If all the four parts are connected in parallel how the joint resistance be compared with the resistance of original wire?
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Explanation:
A piece of wire of resistance r is cut into 4 equal parts. So, each of this part will have resistance equal to r / 4. There are four parts of cut wire each with resistance equal to r / 4. Hence, the equivalent resistance of the combination when connected in parallel is r / 16.
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