two wires of same length and area made of two materials of resistivity rho 1 and rho 2. find equivalent resistivity in a) series and b) parallel.
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The equivalent resistivity in (a) series and (b) parallel is as follows :
Explanation:
Two wires of same length and area made of two materials of resistivity . The equivalent resistance of resistors in series combination is given by :
Since,
...........(1)
Where
length and area of two materials are same
So,
The equivalent resistance of resistors in parallel combination is given by :
Using equation (1) we get :
So,
Hence, this is the required solution.
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