A cell converts
Electrical energy into chemical energy.
Chemical energy into electrical energy.
Magnetic energy into electrical energy.
Electrical energy into mechanical energy.
Iron used in bridges and automobiles are coated with
tin.
lead.
zinc.
Chromium.
When the ends of metal wire are not connected to a battery:
Electrons move from positive electrode to negative electrode.
Electrons move from negative electrode to positive electrode.
Electrons move in random directions.
Protons move in random direction in such a way that their net movement in a unit volume is zero.
Physical reaction.
Chemical reaction.
No reaction.
None of these.
In a cell, electrons move from:
Positive electrode to negative electrode.
Negative electrode to positive electrode.
Both A and B.
Electrones do not move and only negative charge moves from one place to another place.
In electrolytic solutions, carrier of charge is:
Proton.
Electron.
Neutron.
Ion.
Which of the following is one of the most common applications of electric current?
Etching
Galvanizing
Electroplating.
Anealing
electrons move from positive electrode to negative electrode
electrons move from negative electrode to positive electrode
electrons move in random directions
protons move in random direction in such a way that their net movement in a unit volume is zero
Which of the following statements is correct?
A negatively charged particle has higher electric potential than a positively charged particle
Charge flow only through negative charge carriers like electrons
The randomly moving electrons in a metal wire will start moving in a particular direction when a potential difference is applied across it.
During electrolysis, charge flows through electrolyte solution via electrons
The common dry cell produces a voltage of
60 V
1.5 V
3 V
30 V
