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Physics · PYQ NEET UG 2024

हिन्दी

The terminal voltage of the battery, whose emf is \( 10\text{ V} \) and internal resistance \( 1\ \Omega \), when connected through an external resistance of \( 4\ \Omega \) as shown in the figure is :

Question diagram
  1. A
    \( 8\text{ V} \)
  2. B
    \( 10\text{ V} \)
  3. C
    \( 4\text{ V} \)
  4. D
    \( 6\text{ V} \)
View Answer & Solution

Correct answer · Option A

\( 8\text{ V} \)

Explanation

Current \( I = \frac{E}{R + r} = \frac{10}{4 + 1} = 2\text{ A} \). Terminal voltage \( V = E - I r = 10 - 2(1) = 8\text{ V} \).
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