Question

Two cells are connected between points $A$ and $B$ as shown Cell 1 has emf of $12 V$ and internal resistance of $3 \Omega$ Cell 2 has emf of $6 V$ and internal resistance of $6 \Omega$ An external resistor $R$ of $4 \Omega$ is connected across $A$ and $B$ The current flowing through $R$ will be ___A

Answer 1

The correct answer is 1.

Eeq​=31​+61​312​−66​​
Eeq​=6V
req​=2Ω
R=4Ω