Current Electricity 2 Question 11

11. Two batteries with emf $12 V$ and $13 V$ are connected in parallel across a load resistor of $10 \Omega$. The internal resistances of the two batteries are $1 \Omega$ and $2 \Omega$, respectively. The voltage across the load lies between

(a) $11.7 V$ and $11.8 V$

(b) $11.6 V$ and $11.7 V$

(c) $11.5 V$ and $11.6 V$

(d) $11.4 V$ and $11.5 V$

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Solution:

Voltage across load $=I R=\frac{37}{32} \quad(10)=11.56 V$



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