Question

Electromotive force of primary cell is 2.4V where cell is short circuited then the current becomes 4A . Calculate internal resistance of cell

Answer 1

emf=2.4 v

I= 4 A

according to ohms law

V = I R

2.4= 4 R

r= 2.4/4=0.6 ohm

Answer 2

Answer:

0.6 ohms is the answer

Explanation:

Internal Resistance is the resistance that's gift inside the battery that resists the contemporary glide whilst related to a circuit. Thus, it reasons a voltage drop whilst contemporary flows thru it. It is the resistance furnished via way of means of the electrolyte and electrodes that's found in a cell.

E=v+ir

wher D=2.4 V

     currint i=4A  

E=D+ir

2.4=D+4(r)

r=2.4/4

r=0.6 ohms

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