EASY
Earn 100

What is Weston cadmium cell 

Important Questions on Direct Current Circuits

HARD
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Draw a neat labeled diagram of an A.C. generator.
HARD
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Draw a neat labelled diagram of a Dry cell and write the cell reactions taking place at both the electrodes. 
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Which of the following statements regarding the Leclanche cell is TRUE?
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
While giving labelled diagram of dry cell write reactions taking place at cathode and anode.
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
The cathode reaction in the dry cell will be
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
What are primary cells? Describe dry cell in short.
MEDIUM
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Describe the construction of the standard weston cell.
HARD
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
The reactions that occurs at the cathode of a common dry cell is
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Write the reactions taking place at both electrodes of a standard weston cell. Also write the overall cell reaction.
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF

Why is Weston cadmium cell considered a standard cell.

MEDIUM
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}

HARD
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Sketch and describe the operation of dry cell.
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
In the dry cell, the reaction which takes place at the anode is _____.
HARD
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Although the costs of electric energy from dry cells is high, such sources are widely used. Why?
MEDIUM
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
The material used to make anode and cathode of the commonly employed dry cells are
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
In a standard weston cell _____ metal gets oxidised at anode. (Write the name of the metal)
MEDIUM
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
What is the role of ZnCl2 in a dry cell?
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
In a Leclanche cell, MnO2 acts as _____.
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
In dry cell, what acts as negative electrode?
EASY
Physics>Electricity and Magnetism>Direct Current Circuits>Various Sources of EMF
Which one among the following is an electrochemical cell that cannot be charged?