Question

Two cells each having an emf of 1.5volt and an internal resistance of 2ohm are connected in parallel find current when the cells are connected to a 1ohm resistor

Answer 1

he emf and internal resistance of the equivalent cell are 1.7 V and 0.12 ohms.

Explanation:

Given that,

EMF

EMF

Internal resistance

Internal resistance

Effective emf of two cells connected in parallel is,

Now, the effective resistance of equivalent cell is

Hence, The emf and internal resistance of the equivalent cell are 1.7 V and 0.12 ohms.