Define the following:
(a) Electric potential (b) Electric circuit
(c) Potential difference (d) Electric current
Answers
a) - Electric potential, the amount of work needed to move a unit charge from a reference point to a specific point against an electric field. Typically, the reference point is Earth, although any point beyond the influence of the electric field charge can be used.
b)- Electrical circuit is a closed path of electrical components through which the electric current flows.
c)- Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit. ...
d)- An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region. ... In electric circuits the charge carriers are often electrons moving through a wire.
Electric potential :
➯ Electric potential, the amount of work needed to move a unit charge from a reference point to a specific point against an electric field. Typically, the reference point is Earth, although any point beyond the influence of the electric field charge can be used.
Electric circuit :
➯ Electric circuit, path for transmitting electric current. An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.
Potential difference :
➯ Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. The energy is transferred to the electrical components in a circuit when the charge carriers pass through them. ... We use a voltmeter to measure potential difference (or voltage).
Electric current :
➯ Electric current, any movement of electric charge carriers, such as subatomic charged particles (e.g., electrons having negative charge, protons having positive charge), ions (atoms that have lost or gained one or more electrons), or holes (electron deficiencies that may be thought of as positive particles).
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