12/28/2023 0 Comments Intensity equationDirectly proportional to the charge ‘Q’ on source charge.It is inversely proportional to the distance between the source and test charges.Calculations of Electric Field Intensityįrom the formula of electric field intensity, it was derived that. As the distance increases the magnitude of the electric field strength or electric field intensity decreases. It is inversely proportional to the square of the distance between source charge and the test charge. Thus, the electric field intensity of a charge is location dependent. The above equation shows that the electric field intensity is dependent on two factors – the charge on the source charge ‘Q’ and the distance between the source charge and test charge. Thus, the electric field intensity ‘E’ is given as Now, the magnitude of the electric field strength can be defined as ” the force per charge on the test charge”. When a test charge is placed in the electric field it will experience either an attractive electric force or a repulsive electric source. Let the charge on the test charge be ‘q’. This external charge particle which is used to measure the electric field strength is called the test charge. The strength of the electric field created by the source charge can be calculated by placing another charge in its electric field. Since this charged particle is the source of the electric field, it is referred to as a source charge. This charged particle creates an electric field around it. Let us consider a charged particle with charge ‘Q’. Whereas for a negatively charged test charge the direction of force for electric field strength will be towards the source charge particle. Thus, the electric field strength will be directed in the direction away from the charge. So, when a positive test charge particle is introduced to this electric field it will experience a repulsion force. For deriving the direction of electric field intensity, the test charge is considered to be a positive charge. The direction of the electric field is determined by the charge on the test charge particle. The test charge can be either a positively charged particle or a negatively charged particle. It only depends on the amount of charge present on the test charge particle. The electric field strength is independent of the mass and velocity of the test charge particle. The test charge that is subjected to the electric field of the source charge, will experience force even if it is in a rest position. The amount of force experienced by a unit charged particle when it is placed in the electric field is known as Electric field intensity.Įlectric Field Intensity is a vector quantity. Whenever a unit test charge is placed in this electric field it will experience the force emitted by the source particle. This space around the charged particles is known as the “ Electric field“. Every charged particle creates a space around it in which the effect of its electric force is felt. The charge of an electron is about 1.602×10 -19 coulombs. Download the app now to enjoy the exciting offers.Definition: Electric charge is carried by the subatomic particles of an atom such as electrons and photons. Testbook provides online video lectures, mock test series, and much more. Boost your exam preparations with the help of the Testbook App. You can also check other Physics topics too. Hope this article was helpful for your exam preparation. An electron has a charge of roughly \( 1.602\times 10^\) The subatomic particles in an atom, such as electrons and photons, have an electric charge on them. In this article, we will learn about electric field intensity, its formula, units, the difference between electric field intensity & electric field, and the force experienced by a charge in an electric field along with some solved examples.
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