In which of the following cases is the electric field zero but potential is not zero?
1. Electric field(E)=0 but Potential(V) is not 0: The electric field is zero at a point exactly midway between two equal and similar charges but the electric potential at that point is twice than that due to a single charge.
Can electrostatic potential at a point b0y electric field at that point is not zero?
Answer. Yes, electrostatic potential can be zero at a point where electric field is not zero. Consider two charges +Q and -Q separated by a distance d.
Why the electric potential of Earth is zero because Earth is a good?
Since, the size of earth is large and a good conductor. The potential difference of earth remains constant regardless of the electrons taken from it or supplied to it. For this earth is taken to be zero potential surface. Therefore, Earth is good conductor.
Is Earth a good dielectric?
Is the earth a conductor, an insulator, or a semiconductor? Earth is a very good conductor. Due to this reason, all the electrical or electronic equipment which are used, is firstly earth so that if any leakage current is flow through the body of equipment is to be grounded for safety purpose.
Is Earth an insulator?
Earth is a good conductor. The electrons are attracted to the sphere known as ground wire as it supplies a conducting path to the ground. The parts of the earth where there is no moisture acts as an insulator.
Does electric field exist on earth surface?
No electric field exists on earth surface.
Why do lines of magnetic force never cross?
Reason – The two magnetic field lines do not intersect each other because if they do, it means at the point of intersecting, the compass needle is showing two different directions, which are not possible.
Is potential scalar or vector?
q is the charge, V ;is the electric potential. Thus, Electric potential is a scalar quantity.
What is meant by quantization of electric charge what is its cause?
The quantization of electric charge is the property due to which all free charges are integral multiple of basic unit of charge of an electron (or proton) represented by e. The basic cause of quantization is that only integral no. of electrons can be transferred form one body to another on rubbing.
Why can one ignore quantization?
In macroscopic or large scale charges, the charges used are huge as compared to the magnitude of the electric charge. Hence, the quantisation of electric charge is of no use on a macroscopic scale. Therefore, it is ignored and it is considered that electric charge is continuous.
Can charges be created?
Charge is neither created nor destroyed, it can only be transferred from one system to another. Materials that permit electrons to move freely through them, such as most metals.
What do you mean by Quantisation of charges?
Quantization of charge means that when we say something has a given charge, we mean that that is how many times the charge of a single electron it has. Because all charges are associated with a whole electron, this is possible. So electrons have a a negative charge, negative charge.
How much positive or negative charge is there in a cup of water?
Totally they will be neutral. Was this answer helpful?
How much positive and negative charge is there in half cup of water if one cup of water consist of 250cc of water?
250 ml = 250 gram of water since its density is 1 in cgs. One molecule of water has 2 hydrogen atoms (2 protons) and one oxygen atom (8 protons). So 250 g water will have 10 x 8.36 x 1024 = 8.36 x 1025 protons. So one cup of water has 13.3 mega coulomb positive and negative charge, so that the overall charge is zero…
How many positive and negative charges are there?
There are two types of electric charge: positive and negative (commonly carried by protons and electrons respectively)….
| Electric charge | |
|---|---|
| Electric field of a positive and a negative point charge | |
| Common symbols | q |
| SI unit | coulomb |
| Other units | elementary charge faraday ampere hour |