ELECTRIC CHARGE. You will: Characterize electric charge; Explain charging by friction and induction. Give examples of positive and negative effects of. - презентация

1 ELECTRIC CHARGE

2 You will: Characterize electric charge; Explain charging by friction and induction. Give examples of positive and negative effects of charging.

3 WHAT IS HAPPENING IN THE VIDEO AND WHY?

4 Electrification of hair. Balloon electrification. Comb electrification. Electrification of a tissue paper. Friction.

5 Electric charge is a physical quantity and its SI unit is the Coulomb [C]. In practice, we use microcoulomb = µC = C and nanocoulomb = nC = C e= × C The law of conservation of charge : q 1+ q 2+ q 3….+ q n =constant

6 AN ATOM CONSISTS OF 3 MAIN PARTICLES: Protons: positive [plus] charges Neutrons: neutral [zero] particles of atom Electrons: negative charges [minus] Nucleus consists of Neutron and Proton

7 The charges can attract [pull] and repel [push] each other. Like [same] charges repel each other. Unlike [not same] charges attract each other. This force is called electrostatic force.

8 When numbers of electrons and protons are the same an object is neutral. Negatively charged object has more electrons than protons. Positively charged object has more protons than electrons.

9 Terminology: Charge- Nucleus- Electrostatic- Positive- Negative- Attract- Repel- Like charges- Unlike charges-

10

11 ProtonNeutronElectronPositiveNegative Fill the table.

12 Thanks for attention !