What is meant by electric current? Name and define its SI unit. In a conductor electrons are flowing from B to A. What is the direction of conventional current? Give justification for your answer.
Answers
Explanation:
Ampere is SI unit of current. 1 ampere is defined as the current when 1 C of charge is passing through a conductor for 1 second. The direction of current is from A to B. It moves in the opposite direction to the flow of electrons, i.e current flows from positive terminal to negative terminal.
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).
SI unit of electric current is ampere. One ampere of current is that current which flow when one coulomb of electric charge flowing through a particular area of cross-section of the conductor in one second, i.e. 1A = 1 Cs-1
The direction of flow of electrons is gn to be from A to B, ie, electrons start from A and end at B. The direction of conventional current is opposite to the flow of electrons. Therefore, the direction of flow of convention current is from B to A.
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