Two resistances R 1 and R 2 are joined with two batteries of emf E 1 and E 2- If E 2 is short circuited- the current through R 1 isA- E 1 - R 1- R 2B- E 1 - R 1C- E 2 - R 1D- E 2 - R 2

The correct option is B E1/R1when E2 gets short circuited, R2 also gets short circuited, hence effective resistance of the circuit is R1 only. Net Current = E ...

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Standard X

Physics

Combination of Resistors

Two resistanc...

Question

Two resistances R₁ and R₂ are joined with two batteries of emf E₁and E₂. If E₂ is short circuited, the current through R₁is

E₁/R₁

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E₂/R₁

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E₂/R₂

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E₁/(R₁ + R₂)

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Solution

The correct option is A
E₁/R₁

when E₂ gets short circuited, R₂ also gets short circuited, hence effective resistance of the circuit is R₁ only. Net Current = E₁/R₁

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