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ajay mahajan
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Why the current is fundamental quantity?
Why the unit of fundamental quantity current is defined in terms of force?
Why the unit of fundamental quantity current is defined in terms of force?
The SI ampere is defined in terms of the force between two parallel wires.russ_watters said:Current is not defined in terms of force, it is simply the number of electrons that passes a certain point every second.
Your two questions show why the SI attempt to call current a fundamental unit is illogical. Current should not be considered a fundamental quantity because it is defined in terms of force.ajay mahajan said:Why the current is fundamental quantity?
Why the unit of fundamental quantity current is defined in terms of force?
russ_watters said:Current is not defined in terms of force, it is simply the number of electrons that passes a certain point every second.
The ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2×10–7 Newton per metre of length.
russ_watters said:I didn't realize they did that.
Current is the flow of electric charge through a medium, typically measured in amperes (A). It is a fundamental unit of electricity and plays a crucial role in many aspects of daily life, from powering our electronic devices to providing lighting in our homes.
Current is typically measured using an ammeter, which is a device that measures the flow of electrons through a circuit. The unit of measurement for current is amperes (A), and 1 ampere is equal to 1 coulomb of charge passing a given point in 1 second.
The flow of current can be affected by several factors, including the voltage applied, the resistance of the medium, and the type of material the current is passing through. Additionally, the temperature and length of the conductor can also impact the flow of current.
While current and voltage are related, they are not the same thing. Current is the flow of electric charge, while voltage is the potential difference that drives the flow of current. In other words, current is the actual movement of electrons, while voltage is the force that pushes them.
AC (alternating current) and DC (direct current) refer to two different types of current flow. AC current alternates direction periodically, while DC current flows in one direction continuously. Most household appliances use AC current, while batteries and electronic devices often use DC current.