1. A substance that does not allow electrons to pass through it is called _______.   an insulator   an inductance   a conductor   Hint Half-n-half Clue   2. The charges on 6.242 x 1018 electrons is equal to about ...   1 Coulomb   10 Coulombs   1 Ampere   Half-n-half Clue   3. When an ebonite rod is rubbed with cat's skin,it gets ...   positively-charged   remains neutral   negatively-charged   Half-n-half Clue   4. Farad is a unit of _______.   current   capacitance   charge   Half-n-half Clue   5. Name the law: 'The sum of the total electrons in a system is a constant quantity'   Law of Conservation of Electric Charges   Law of Conservation of Momentum   Law of Conservation of Matter   Half-n-half Clue   6. When the water vapor in the atmosphere condenses and clouds are formed, these clouds contain large amounts of _______ charges.   lightning conduction   water   static electric   Half-n-half Clue   7. Like charges _______ each other.   touch   repel   attract   Half-n-half Clue