These mcqs are taken from all boards including multan,sargodha,punjab,lahore ,rawalpindi, peshawar, federal board)etc only for 2nd year chapter number 1st;
Free electrons
are:
·
Tightly bound
·
Fixed
·
Loosely bound
·
Strongly fixed.
S I unit of
charge is(Gujranwala 1993,Punjab board 1994,faislabad 2003, A.K 1995)
·
Ampere
·
Volt
·
Coulomb
·
Calorie
Charge on
electron was determined by(Rawalpindi 1993,multan 2001,Lahore 2003)
·
Ampere
·
Maxwell
·
Millikan
·
Thompson
An insulating
rod is charged positivel by rubbing. This due to:
·
Deficiency of proton
·
Excess of protons
·
Deficiency of electrons
·
Excess of electrons