Does current depend on speed of electrons?

Current is related to the speed of electrons but it is not the speed of electrons! Current is the amount of charge that passes through a cross sectional area in one second. Relating current solely by the speed of free electrons is wrong.

On what does magnitude of current depends on?

The correct answer is On its resistance and the voltage across it. The magnitude of a current flowing through a device depends on its resistance and the voltage across it. Electric current is the flow of electrically charged particles through a medium. Current is inversely proportional to resistance.

What determines the magnitude of electric current?

The magnitude of an electric current depends upon the quantity of charge that passes a chosen reference point during a specified time interval. Electric current is measured in amperes, with one ampere equal to a charge-flow of one coulomb per second.

Does current have speed?

The Basics of Electrical Currents As stated before, while the speed of the transmission of the electrical current itself is about the speed of light, the actual electrons within that wave might only move along at a few millimeters per second.

Is current the speed of flow?

During an electric current, the metal wire stays still and the sea of charge flows along through it. In other words, the speed of the charges is proportional to the value of electric current; small current means slow charge-flow, large current means high speed.

What current depends on?

The amount of current in a circuit depends on the amount of voltage and the amount of resistance in the circuit to oppose current flow. Just like voltage, resistance is a quantity relative between two points.

What is the magnitude of current?

Magnitude of current is the amount of charge flowing at a particular point. As we know the graph of Alternating current will be pulsating so its magnitude changes from time to time that means charge flowing keeps changing.

How do you find the magnitude of a current?

Its magnitude can be measured or calculated buy measuring the voltage of a resistor in the circuit. Then the calculation: A = E/R, where A is the current, E is the voltage drop across the resistor and R is the value of the resistor in Ohms.

What is the speed of electrical current?

It’s the electromagnetic wave rippling through the electrons that propagates at close to the speed of light. The dimensions of the wire and electrical properties like its inductance affect the exact propagation speed, but usually it will be around 90 per cent of the speed of light – about 270,000 km/s.

What is the speed of electrons in a current?

Drift velocity, the average speed at which electrons travel in a conductor when subjected to an electric field, is about 1mm per second. It’s the electromagnetic wave rippling through the electrons that propagates at close to the speed of light.