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Static Electricity
Static electricity knowledge based questions
Term | Definition |
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Charge | The characteristics of the elementary particles which consist of matter is called charge. The unit of charge is coulomb (C). |
Coulomb or 1C | If 1 ampere (1 A) current flows through a conductor for 1 second (1 s), then the amount of charge that passes through any cross section of the conductor is called coulomb (1 C) |
Conductors | The substances through which electricity or electric charge can pass easily are called conductors, e.g. metal, soil, human body etc. |
Non-conductors or insulator | The substances through which electricity or electric charge cannot pass easily are called non-conductors or insulator, such as wood, paper, glass etc. |
Semiconductors | Semiconductors are materials which have a conductivity between conductors and non-conductors or insulator. Semiconductors can be pure elements, such as silicon or germanium, or compounds such as gallium arsenide or cadmium selenide. |
Electrification | The process of making a neutral body into a charged body is known as electrification. |
Charged atom | The shortage or excess of electrons in any atom is considered to be charged atom. |
Electroscope | The instrument which detects the existence and nature of charge in any body is called electroscope. |
Electric induction | The process of charging a neutral body by bringing it very near to the charged body is called electric induction. |
Electric force | The force acting between two charges or between two charged objects is called electric force. It may be attractive or repulsive. |