12 cells each of emf 2v and of internal resistance
0.5ohm are arranged in a battery of n rows
and an enternal resistance 0.4ohm is connected
to the pole of the battery. estimate the current
flowing through the resistance in terms of m

i'm on my way to history not a mistory.

option number c is the right answer.

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =

god i hope this !