Current Electricity

Question: Two wires of the same dimensions but resistivities ${\rho _1}{\rm{ and }}{\rho _2}$ are connected in series. The equivalent resistivity of the combination is

1) ${\rho _1} + {\rho _2}$

2) $\frac{{{\rho _1} + {\rho _2}}}{2}$

3) $\sqrt {{\rho _1}{\rho _2}} $

4) $2({\rho _1} + {\rho _2})$

Solution:

Explanation: No Explanation

Grouping of Resistors Combination of Resistors

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