In a mixed grouping of identical cells, firve rows are conneted in parallel and each row contains 10 call. This combination sends a current I through an external resistance of 20Omega. if the emf and internal resistance of each call is 1.5 V and 1 Omega, respectively then find the value of i.
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Total no of cells=18
∴ equivalent emf :-ϵ=18×4v
=72v
Equivalent resistance,r=18×1Ω
=18Ω
December 26,
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