Question

For two cells
What is the effective emf
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Answer 1

Answer:

Let ε1 and ε2 be the emfs of the two cells connected in parallel.

Let r1 and r2 be their intermal resistance respectively

I1 and I2 are the currents leaving the positive electrodes of the cells.

At B1, currents I1 and I2 flow in whereas the current I flows out. Therefore I=I1+I2

Let V1 and V2 be the potentials at B1 and B2 respectively.

P.d across the first cell is V1−V2=V=ε1−I1r1

P.d across the second cell is also V1−V2=V=ε1−I1r1

Hence I1=r1ε1

Answer 2

Answer:

Clearance of dying cells by phagocytes: mechanisms and implications for disease pathogenesis.