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Four identical cells each of emf 2V, are...

Four identical cells each of emf 2V, are joined in parallel providing supply of current to external circuit consisting of two `15 Omega` resistors joined in parallel. The terminal voltage of the cells ae read by an ideal voltmeter is 1.6V. Calculate the internal resistance of each cell.

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To solve the problem step by step, let's break it down: ### Step 1: Understanding the Circuit We have four identical cells, each with an electromotive force (emf) of \( E = 2 \, \text{V} \), connected in parallel. The external circuit consists of two \( 15 \, \Omega \) resistors connected in parallel. ### Step 2: Calculate the Equivalent Resistance of the External Circuit The two \( 15 \, \Omega \) resistors in parallel can be calculated using the formula for parallel resistors: ...
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