CUET · PHYSICS · PYQ PAPER 2025
A 10 V battery having \( 3 \text{ } \Omega \) internal resistance is connected with a 200 V battery and a \( 35 \text{ } \Omega \) resistance as shown in the figure. The terminal potential drop at 10 V battery will be:
- A 18 V
- B 25 V
- C 15 V
- D 4.9 V
Answer & Solution
Correct Answer
(B) 25 V
Step-by-step Solution
Detailed explanation
\( I = \frac{E_{\text{net}}}{R_{\text{total}}} \) \( I = \frac{200 \text{ V} - 10 \text{ V}}{35 \text{ } \Omega + 3 \text{ } \Omega} \) \( I = \frac{190 \text{ V}}{38 \text{ } \Omega} = 5 \text{ A} \) Current flows in a direction that charges the 10 V battery. \( V_T = E + Ir \)…
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