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Simple Circuit

What is the e...

Question

What is the e.m.f. of a dry cell ?

1.5 V

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2.5 V

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1.1 V

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- 1.1 V

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Solution

The correct option is A $1.5 V$
A common dry cell is the zinc–carbon battery, sometimes called the dry Leclanché cell, with a nominal voltage of 1.5 volts, the same as the alkaline battery (since both use the same zinc–manganese dioxide combination).Hence the correct option A.

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An electrochemical cell produces a voltage of 1.1V. If voltage more than 1.1V is applied in opposite direction

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Z n | Z n^{2 +} | | C u^{2 +} | C u

E_{c e l l} = 1.1 V

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Z n

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1.5 V

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(E^{\circ})

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(1 F = 96500 C / m o l)

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