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In Leclanche cell, Zinc rod is placed in...

In Leclanche cell, Zinc rod is placed in

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A cell of e.m.f. 2 V and negligible internal resistance is connected in series with a potentiometer wire of length 100 cm. The e.m.f of the Leclanche cell is found to balance on 75 cm of the potentiometer wire. The e.m.f. of the cell is

When a coil is connected to a Leclanche cell, its resistance is found to be R. What is the effect on its resistance, if it is conncected to an a.c. source?

A cell of e.m.f. 4 V and of negligible internal resistance is connected in series with a potentiometer wire of length 400 cm. The e.m.f. of a Leelanche cell is found to be balacned at 150 cm from the positive end of the potentiometer wire. What is the e.m.f. of the Leclanche cell ?

In a Leclanche cell, cathode is _______.

In the dry cell or Leclanche cell, a carbon rod serves as the cathode, which is immersed in the electrolyte in the center of the cell. At cathode, manganese is reduced from the "_______" oxidation state to the "_______" state.

Assertion : Leclanche cell is used, when constant supply of electric current is not required. Reason : The e.m.f. of a Leclanche cell falls, if it is used continuously.

Ammonia released during the reduction at cathode of Leclanche cell combines with zinc ions to form

A 10 m long potentiometer wire is connected to a battery having a steady voltage . A leclanche cell is balanced at 4 m length of the wire . If the length is kept the same, but its cross - section is doubled the null point will be obtained at .