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Electricity and Magnetism
If the electrical force of repulsion between two 1-C charges in 10 N. How far apart are they?
Electricity and Magnetism
Charges of -q and +2q are fixed in place, with a distance of 2.00 m between
them. A dashed line is drawn through the negative charge, perpendicular to the
line between the charges. On the dashed line, at a distance L from the negative
charge, there is at least one spot where the total potential is zero. Find L.
them. A dashed line is drawn through the negative charge, perpendicular to the
line between the charges. On the dashed line, at a distance L from the negative
charge, there is at least one spot where the total potential is zero. Find L.
Electricity and Magnetism
A 45 turn coil that has a radius of .183 meters has a current of 2.81 amps. What is the strength of the magnetic field at a point on the coils axis that is .483 meters from the center of the coil.
Electricity and Magnetism
how a solar cell works? does it work on photoelectric effect?
Electricity and Magnetism
An electron microscope uses an electron beam of energy 1.0 keV. Can this
microscope be used to obtain the image of an individual atom? (The size of an
atom ~10−10 m.)
microscope be used to obtain the image of an individual atom? (The size of an
atom ~10−10 m.)
Electricity and Magnetism
what is the effect of SOLAR CELLS, used for electricity purposes,on environment i.e any change in temperature occurs or not ?
Electricity and Magnetism
The potential energy of 3.0x10^-6C charge changes from 0.02J to 0.08J when it is moved from point 1 to point 2. Calculate the change in the electric potential between these two points.
Electricity and Magnetism
A parallel plate capacitor is to be designed with a voltage rating of 1 kV using material of dielectric constant 3 and electric field strength 106 V.m-1. What minimum area of plates is required to have a capacitance 50 pF?
Electricity and Magnetism
Electrochemical gradient
It is formed of a chemical gradient and an electrical gradient. I understand the chemical gradient part, it is the difference in solute concentration across a membrane. When there are unequal concentrations of an ion across a permeable membrane, the ion will move across the membrane from the area of higher concentration to the area of lower concentration through simple diffusion.
But I don't get the electrical gradient part. I have been reading Wikipedia and I was wondering about a sentence mentioned there- If there is an unequal distribution of charges across the membrane, then the difference in electric potential generates a force that drives ion diffusion until the charges are balanced on both sides of the membrane.
Could you please explain either the sentence or the concept as a whole. For your kind information, I'm a zoology minor.
It is formed of a chemical gradient and an electrical gradient. I understand the chemical gradient part, it is the difference in solute concentration across a membrane. When there are unequal concentrations of an ion across a permeable membrane, the ion will move across the membrane from the area of higher concentration to the area of lower concentration through simple diffusion.
But I don't get the electrical gradient part. I have been reading Wikipedia and I was wondering about a sentence mentioned there- If there is an unequal distribution of charges across the membrane, then the difference in electric potential generates a force that drives ion diffusion until the charges are balanced on both sides of the membrane.
Could you please explain either the sentence or the concept as a whole. For your kind information, I'm a zoology minor.
Electricity and Magnetism
12 equal charges are 'q' are situated at the corner of a regular 12-sided polygon. what is
a)net force on test charge Q
b)electric field
c)potential
at the centre?
a)net force on test charge Q
b)electric field
c)potential
at the centre?
