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a lechlanche cell of emf 1.4V is connected to the primary of a transformer of turn ratio 10:1. the output voltage is?

Deepali Kolte 17th May, 2020

Answer (1)

Mounika Sonti 18th May, 2020

Hello!!!!

Hope you are doing great!!!!!

The overall reaction of a lechlanche cell is

ZnHg+Hgo(s) gives rise to ZnO(s)+HgI

Change in valency(number of electrons transffered) =n=2

According to nernst equation,

E cell = E^o cell - RT/nF(Zn 2+/Hg 2+)

=1.4 - 8.314*298 / 2*96500(10/1)

=1.4 - 0.06/2 * (10)

=1.4 - 0.3

=1.1V

Hope it helps!!!!!1

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Comments (2)

19th May, 2020

actually they have given the answer to be zero in the chapter emi and AC... I am actually confused....

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19th May, 2020

Deepali Kolte Hello!!
According to NCERT Book,I got the equation of cathode and anode respectively . Accordingly I solved the problem.
Hope it helps!!!!

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