
Conventional current is the direction of electric current from positive terminal of a cell to negative terminal
(A) True
(B) False
Answer
516.6k+ views
Hint : The conventional current is considered a positive current flow. The electron current flows from the negative terminal of the battery or cell to the positive terminal of that battery or cell.
Complete step by step answer
In a conductor, when a potential difference is applied across its ends current will flow. Nonetheless, there are two variants of current considered to flow in conductor. One is the electron current or electronic current and the other is the conventional current.
When, say, the positive end of a voltage source terminal is connected to point A of a conductor AB, and the negative terminal is connected to point B, since electrons have negative charge, the electrons in the conductor are attracted to the positive terminal of the conductor i.e. point A and repelled from the negative terminal i.e. point B. Hence, electrons are considered to flow from the negative terminal to the positive terminal. This is considered the electron (or electronic) current. Electronic current is the flow of negative charge (hence current)
However, for historic reasons, currents are generally considered to be the flow of positive charge. If mobile positive charges were in a conductor, they would have been repelled from the positive terminal i.e. point A, and attracted to the negative terminal point B, Hence, this imaginary flow of positive charge is considered the conventional current
Hence, the conventional current flows from positive terminal to negative terminal and thus, the statement is true.
Hence the correct option is A.
Note
For clarity, note that although we consider this to be two types of current, these currents do not flow independently but are one and the same. The movement of negative charge from negative to positive terminal is as though there’s a movement of positive charge from positive to negative terminal.
Complete step by step answer
In a conductor, when a potential difference is applied across its ends current will flow. Nonetheless, there are two variants of current considered to flow in conductor. One is the electron current or electronic current and the other is the conventional current.
When, say, the positive end of a voltage source terminal is connected to point A of a conductor AB, and the negative terminal is connected to point B, since electrons have negative charge, the electrons in the conductor are attracted to the positive terminal of the conductor i.e. point A and repelled from the negative terminal i.e. point B. Hence, electrons are considered to flow from the negative terminal to the positive terminal. This is considered the electron (or electronic) current. Electronic current is the flow of negative charge (hence current)
However, for historic reasons, currents are generally considered to be the flow of positive charge. If mobile positive charges were in a conductor, they would have been repelled from the positive terminal i.e. point A, and attracted to the negative terminal point B, Hence, this imaginary flow of positive charge is considered the conventional current
Hence, the conventional current flows from positive terminal to negative terminal and thus, the statement is true.
Hence the correct option is A.
Note
For clarity, note that although we consider this to be two types of current, these currents do not flow independently but are one and the same. The movement of negative charge from negative to positive terminal is as though there’s a movement of positive charge from positive to negative terminal.
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