Electric Field Due to Point Charge, Know how every Charge exert force on every other Charge

Safalta Expert Published by: Noor Fatima Updated Sun, 09 Oct 2022 05:06 PM IST

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Here is important and relevant information regarding Class 12 Physics Concept of Electric Field of Point Charge? Read the article to learn about the same.

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Every charge in this universe exert pressure on every other charge. This is a gallant yet true proclamation of Physics. One way to understand the aptitude of a charge to dominate other charges anywhere in space is by visualizing the impact of the charges as a field. It is to be noted that this influence is simply the electrostatic force that a charge exerts over the other. However, we need a scalar or vector quantity acting on it, and is only reliant on the dominance and the spatial distribution when specifying fields.

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Note that this ‘influence’ is simply the electrostatic force that a charge is able to exert over another. However, when describing fields, we require a quantity (scalar or vector) that is independent of the charge acting on and only dependent on the influence and the spatial distribution. So in simple terms, we can describe the electrostatic field keeping the force exerted by a point charge on a unit charge into consideration. In other terms, we can describe the electric field as the force per unit charge.

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Electric field of a charge

To find out an electric field of a charge q, we can establish a test charge q0 and gauge the force exerted on it.

Therefore, the force applied per unit charge is

It is to be noted that the electric field is a vector quantity, which is described at every point in space, the value of which is reliant only upon the radial distance from q.

The trial charge q0 itself has the capability to exert an electric field around it. Therefore, to prevent the dominance of the test charge, we must preferably make it as tiny as we can.

Consequently,

Electric Charge
Conductors and Insulators
Basic Properties of Electric Charge
Forces between Multiple Charges

Electric field due to point charge

This is a point charge's electric field. Moreover, see it displays spherical symmetry because the electric field has the same extent on every point of an illusory sphere centered around the charge q.
Refer to the information given above about Electric Charges due to Point Charges.

Define Coulomb’s Law.

Coulomb’s Law says that the degree of the electrostatic force of attraction or repulsion between two point charges is directly relative to the product of the degrees of charges and contrarily relative to the square of the distance between them.

What are the different types of Electric Charges?

There are two types of Electric charge-
• Positive (Protons)
• Negative (Electrons)

Define one Coloumb.

One Coloumb is the amount of charge disseminated in one second.

What is an electric charge?

The electric charge is the fundamental property of any matter that causes it to undergo a force when exposed to an electric or magnetic field.

What are the Methods of Charging?

An uncharged item can be charged in three different ways-
• Conduction by Friction
• Conduction by induction
• Conduction by Conduction

Is Electric charge a vector quantity?

No, the Electric charge is a scalar quantity.

Who discovered electric charge?

Benjamin Franklin.

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