Which of the following is one of the most common applications of electric current?
Etching
Galvanizing
Electroplating.
Anealing
Current is the flow of
Matter
Electrons
Protons
Charge
Materials which allow electric current to pass through them are called
Conductors.
Insulators.
Semiconductors.
None of these.
Iron used in bridges and automobiles are coated with
tin.
lead.
zinc.
Chromium.
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.
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.
In a cell,the electron movement will be :
Positive electrode to negative electrode
Negative electrode to positive electrode
Both A and B
Electrons do not move and only negative charge moves from one place to another place
Metals are good conductors because
Outer electrons are loosely bound to the atom
Outer electrons are strongly bound to the atom
Inner electrons are loosely bound to the atom
Protons can detach from the nucleus and conduct electricity
Charge flows between two ends of a conductor when
Equal and same type of charges are present at the two ends
Different electric potentials exist at the two ends of a conductor
The potential difference between the ends is zero
Same electric potential is present at the two ends
When an atom loses an electron
Atom acquires negative charge
Atom acquires positive charge
Electron acquires positive charge
The algebric sum of charge present inside an atom remains same
