What is the Ohm's law?The proportional relationship of the potential difference between the ends of an ideal conductor and the current passing through it is known as Ohm’s law. Ohm’s law states that the current passing through an ideal conductor is directly proportional to the potential difference between its ends, provided that the temperature and other physical … [Read more...] about What is the Ohm’s law?

# Electricity

## Flow Of Current In A Metal

Flow Of Current In A Metal Flow of electric current Three basic conditions are required for an electric current to flow. A device used to produce an electric current like cell, battery, or a plug point acting as a source. A wire made of a metal like copper, silver, or aluminium, which will allow electric current to flow through easily. An unbroken loop (of the wire) … [Read more...] about Flow Of Current In A Metal

## How do you calculate the total resistance of a parallel circuit?

How do you calculate the total resistance of a parallel circuit? The Effective Resistance of Resistors Connected in ParallelThere are three important characteristics in a parallel circuit: (a) The potential difference is the same across each resistor. (b) The current that passes through each resistor is inversely proportional to the resistance of the resistor. (c) The … [Read more...] about How do you calculate the total resistance of a parallel circuit?

## How do you calculate the total resistance of a series circuit?

How do you calculate the total resistance of a series circuit? The Effective Resistance of Resistors Connected in SeriesThere are three important characteristics in a series circuit: (a) The current passing through each resistor is the same. (b) The potential difference across each resistor depends directly on its resistance. (c) The sum of the potential difference … [Read more...] about How do you calculate the total resistance of a series circuit?

## What Is Resistivity

What Is Resistivity where ρ (rho) is called resistivity of the material of conductor. If, l = 1 m and a = 1 m2 Then R = ρ .... (ii) Thus, if we take 1 metre long piece of a substance having a cross-sectional area of 1 meter2, then the resistance of that piece of the substance is called its resistivity. Resistivity of a substance can … [Read more...] about What Is Resistivity