Because charges may be of two kinds i.e. positive and negative. And base quantities never have different kinds but are only of one kinds i.e. length, mass,time etc. That's why charges' are expressed in the dimensions of current and Time and not carry there own dimension.
By: M.Adeel Ahmad
BS(Hons.) Physics
GC University FSD.
Which of the following is a vector quantity
fundamental
Charge is a Scalar Quantity as it only have Magnitude not Direction.Like in 10 Coulomb of Charge, it has 10 as magnitude and Coulomb as Unit. But this is not showing any information which tell us that it is in a particular direction.
You might apply the basic definition of "vector versus scalar".
quantity, quality and direction
Which of the following is a vector quantity
Current is a basic quantity, measured in amperes.
The unit of measurement for the quantity of an electrical charge is called an electrometer. The quantity of charge can also be measured in directly by a ballistic galvanmotere.
charge
Charge has no direction. Therefore it is a scalar.
Charge is not a vector.
The fundamental carrier of electric charge is the electron. The charge on one electron is 1.6021765 × 10−19 Coulomb, and is negative. Charge can't exist in any smaller quantity, and all charges are multiples of this quantity. Protons have a positive charge of the same quantity, but they stay in their respective nuclei and don't participate in the movement of charge from place to place.
The basic principle of a transducer: A transducer which converts a physical quantity to the electrical quantity.
The Coulomb is a unit of electric charge. [Charge] is a fundamental quantity.
fundamental
specific charge is because a physical quantity can be complete only when by giving magnitude only. Here the physical quantity is complete by its magnitude.
Charge is a Scalar Quantity as it only have Magnitude not Direction.Like in 10 Coulomb of Charge, it has 10 as magnitude and Coulomb as Unit. But this is not showing any information which tell us that it is in a particular direction.