Question

when is resistance of 45 ohm is connected across terminal of the cell current is 0.3 ampere when resistance is in decrease 225 ohm the current is 0.5 ampere and find out EMF and internal EMF and internal resistance of the cell answer is 0.3 ohm and 0.6 volt

Answer 1

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Answer 2

Answer:

According to the question :

V=E/r+R

0.5=E/2+r ....equation 1

O. 25=E/5+r

4E=5+r

r=4E-5 putting this value is in equation 1,we get...

0.5=E/2+4E-5

2E=2+r

2E=2+4E-5

-2E=-3

E=3/2