Question

Three identical 3volt batteries are connected in parallel.the emf of the combination is​

Answer 1

Answer:

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Explanation:

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Answer 2

Given:

3 identical 3volt batteries are connected in parallel.

To find:

The EMF of the combination?

Calculation:

• Since the question says that the batteries are identical, we can assume that their internal resistance is same.

Net EMF in parallel combination is given as:

$E_{net} = \dfrac{ \bigg( \dfrac{E}{r} +\dfrac{E}{r} + \dfrac{E}{r} \bigg)}{ \bigg(\dfrac{1}{r} + \dfrac{1}{r} + \dfrac{1}{r} \bigg)}$

$\implies E_{net} = \dfrac{ \bigg( \dfrac{3E}{r} \bigg)}{ \bigg(\dfrac{3}{r} \bigg)}$

$\implies E_{net} = \dfrac{ 3E }{3}$

$\implies E_{net} = E= 3 \:Volt$

So, net EMF of combination is 3 Volt.