A storage battery has an emf of 25 V and internal resistance is 0-20 - What is its terminal voltage when it is being charged by a current of 8 A-

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Standard X

Physics

Electric Potential and Potential Difference

A storage bat...

Question

A storage battery has an emf of $25 V$ and internal resistance is $0.20 Ω$ . What is its terminal voltage when it is being charged by a current of $8 A$ ?

$23.4 V$

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$33.4 V$

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$26.6 V$

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$78.5 V$

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Solution

The correct option is A
$23.4 V$

Step 1: Given
emf = $25 V$
internal resistance r= $0.20 Ω$
current I= $8 A$
Step 2: Formula used and calculation
Terminal voltage while charging = emf + Ir
$= 25 + 0.20 \times 8 = 25 + 1.6 = 26.6 V$
Hence, option (c) is correct.

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A storage battery has an emf of 25V and internal resistance is 0.20Ω. What is its terminal voltage when it is being charged by a current of 8A?

The correct option is A 23.4VStep 1: Givenemf = 25Vinternal resistance r= 0.20Ωcurrent I= 8AStep 2: Formula used and calculationTerminal voltage while charging = emf + Ir =25+0.20×8=25+1.6=26.6VHence, option (c) is correct.

A storage battery has an emf of $25 V$ and internal resistance is $0.20 Ω$ . What is its terminal voltage when it is being charged by a current of $8 A$ ?

The correct option is A
$23.4 V$

Step 1: Given
emf = $25 V$
internal resistance r= $0.20 Ω$
current I= $8 A$
Step 2: Formula used and calculation
Terminal voltage while charging = emf + Ir
$= 25 + 0.20 \times 8 = 25 + 1.6 = 26.6 V$
Hence, option (c) is correct.