Electric current: Ohm’s law, resistivity

While many experiments are performed especially to show that some things are almost equal to the electric field, Ohm’s Law states that the electric current flowing from any conductor is directly proportional to the potential difference (voltage) between its terminals, assuming that the conductor’s physical condition does not change. In other words, the ratio of […]

The movement of charged particles or atoms through a conductor or space is called current. The S.I unit is Ampere. Current is generally of two types- Direct Current is a type of current that flows or moves only in one direction. Alternating Current changes its direction or flow of current over time.  In this article,

Resistors are primarily used in two types of combinations. These two types are two different ways of arranging the resistances. Firstly, the resistors can be connected end to end. In this type of combination, the beginning of one resistor is connected to the end of another resistor. The remaining ends of the resistors are connected

A basic circuit that permits electrons to travel between one or more resistors is known as a series circuit. A resistor is anything that draws electricity from a cell (battery). The resistor in a series circuit is commonly a bulb. The circuit is connected to the cell from one end to the other to light

RMS stands for root mean square. It is the value of the current or the voltage that is varied. While measuring the RMS in DC current, everything usually depends on the multimeter. In the case of DC current, the true RMS Value is irrelevant because the RMS in a pure DC voltage is the same

Resistivity, also known as specific electric resistance, is the efficiency of a material to oppose or resist the flow of charge or current. It depends on the material’s behaviour and the temperature. It doesn’t matter what the shape is and the size of the particular substance. The ohm metre is the SI unit for measuring

We defined the term “resistance” and outlined the basic design of a resistor in current and resistance. A resistor is an ohmic device with V = IR that limits the passage of charge in a circuit. In most circuits, there are many resistors. When numerous resistors are linked to a battery, the current supplied by

The resistance of a conductor is a measurement of the conductor’s resistance to current flow. The resistance to current flow varies between conductors. The letter R stands for resistance. A conductor’s resistance, R, is defined as the ratio of the potential difference, V, across it to the current, I, flowing through it.The ohm is the

Every material acts as a conductor if it has a potential difference, i.e., a certain voltage is applied through its end, which leads to the flow of electric current through itself. Once the electricity is flowing through the conductor, the atomic structure of that material might alter the electric flow by opposing or resisting, and

Electrical resistivity (sometimes referred to as specific electrical resistance or volume resistivity) is a property of a substance that governs how well it resists electric current. Electric current can freely flow through a substance with a low resistance.The Greek letter is widely used to indicate resistance. Resistivity and resistance equation: Formula for resistivity can be: