Select Board & Class
what is the meaning of quantisation of charge?
An infinite number of charges each equal to q are placed along x axis at x=1 , x=2 , x=4, x=8 and so on . Find the electric field at the point where x=0 due to this setup of charges and what will be the electric field if inthe above setup the consecutive charges have opposite sign.?
Difference between gravitational force and electrostatic force
what is the dimensional formula of epsilon not?
Two similarly and equally charged identical metal spheres A and B repel each other with a force of 0.000002 N. A third identical sphere C is touched with A and then placed at the mid point between A nd B. What is the net electric force on C?
Three point charges of +2 microcoulomb,-3 microcoulomb and -3 microcoulomb are kept at the vertices A,B and C respectively of an equilateral triangle of side 20 cm.What should be the sign and magnitude of the charge to be placed at the mid point(M) of side BC so that the charge at A remains in equilibrium?
A particle A has charge q anda particleB has charge 4q with each of them having same mass m. when allowed to fall from rest through sam potential difference , the ratio of their speed va:vb will be:
A charge q is placed at the center of the line joining two equal charges Q. Show that the system of three charges will be in equilibrium if q = -Q/4.
derive an expression for potential energy of an electric dipole in a uniform electric field .
difference between uniform and non-uniform electric fields.... plzz if possible draw diagrams too..!
A charge "q" is placed at the centre of the cube of side "l". What is the electric flux passing through each face of the cube?
what does q1+q2 =0 signify in electrostatics?
Pls provide chart for values of Sin, Cos, Tan and Cot for specific values from 30 degrees to 360 degrees.
A pendulum bob of mass of 80 mg and carrying a charge of 2 X 10-8 C is at rest in a horizontal uniform electric field of 20,000 V/m. Find the tension in the thread of the pendulum and the angle it makes with the vertical.
Take( g = 9.8ms-2 )
What is quantisation of charge?
Two infinitely long parallel wires having linear charge densities λ1 and λ2 respectively are placed at a distance of R metre. The force per unit length on either wire will be.......?
What are the limitations of Coulomb's Law ?
a gas is heated through 1 degree celsius in a closed vessel. its pressure is increased by 0.4%.the initial temperature of the gas is ????
Four charges, each equal to Q are placed at the 4 corners of a square and a charge q is placed at the centre of the square. If the system is in equilibrium, then the value of q is?
Three charges each equal to q are placed at the three corners of a square of side a. Find the electric field at the fourth corner.
two equal point charges A and B are R distance apart. A third point charge placed on the prependicular bisector at a distance 'd' from the center will experience maximum electrostatic force when
1. d = R/2 X 1.414
2 d = R/ 1.414
3. d = R 1.414
4. d = 2 X 1.414 R
What is the angle between the directions of electric field at any 1) axial point 2) equatorial point due to an electric dipole ?
when a body becmes negatively charged , its mass
[a] decreases [b] increases
[c] remins the same [d] none of these
q. Two point charges of +16 micro coulomb and -9 micro coulomb are placed 8 cm apart in air .Determine the position of the point at which the resultant field is zero .
Two small balls having equal positive charge q coulomb are suspended by two insulating strings of equal length ' l ' meter from hook fixed to stand.The whole setup is taken in a satellite into sapce where there is no gravity. What is the angle between the two strings and the tension in each string?
how much positive and negative charge is there in a cup of water
an electric dipole of dipole moment 20 *10-6Cm is enclosed by a closed surface .what is the net flux coming out of the surface?
two fixed point charges +4e and +e units are separated by a distance a .where should the third point charge be placed for it to be in equilibrium ?
what is the principle of vernier calipers
electrostatic field lines cannot be discontinuous why?
Find out the magnitude of electric field intencity at point (2,0,0), due to a dipole of dipole moment , Pvector = icap + 3 jcap kept at origin. also find out the potential at that point
state Gauss' law in electrostatics.
2 point charges at distance ' r ' in air exert a force ' F ' on each other, at what distance will these charges experience the same force ' F' in a medium of dielectric constant K?
Four charges are placed on corners of a square ABCD, A = Q, B = -2Q, C = +2Q & D = -Q having side of 5cm. If Q is one microcoulomb, then electric field intensity at centre will be
a) 1.02 x 107 N / C upwards
b) 2.04 x 107 N / C downwards
c) 2.04 x 107 N / C upwards
d) 1.02 x 107 N / C downwards
project to study various factors on which the internal resistance emf of a cell depends
A charged particle q is shot towards another charged particle Q, which is fixed, with a speed v.It approaches Q upto a closest distance r and then returns. If q were given a speed of 2v the closest distance of approach would be?
State and prove Gauss Theorem.
An electron falls through a distance of 1.5 cm in a uniform electric field of magnitude 2.0 × 104 N C–1 in the direction of the field . Then the direction of the field is reversed keeping its magnitude unchanged and a proton falls through the same distance . compute the time of fall in each case.
name the system for which electric field at distances 1cm,2cm,3cm are in the ratio 1:1/8:1/27
what are the physical significance of electric field??
What is the formula of rate of dissipation of joule heat in resistance per unit volume ?
It will be most appreciated from my side if you give the derivation also ??
ABC is an equilateral triangle of side 10m and D is the mid point of BC . Charges of +100 , -100 and +75 micro C are placed at B , C and D respectively . Find the force on +1 micro C charge placed at A.
explain cyclotron in a more elaborate way
the sum of two point charges is 7uC. they repel each other with a force of 1N when kept 30cm apart in free space. calculate the value of each charge.
a semi infinite line charge of linear charge density 'D' has the shape of an infinitely long straight wire whose one end is connected to three-fourth circle of radius 'R' while one of the diameters of 3/4th circle is parallel to the infinitely long straight part.What is the field at the centre of the circle.How?
If E=6i+3j+4k, calculate the electric flux through a surface of area 20 units in the YZ plane.
A certain charge Q is divided into two parts q and Q-q which are then seperated by a certain distance.What must q be iin terms of Qto maximise the electrostatics repulsion between the two charges?
Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
what is the source charge and test charge
HOW TO DO THIS QUESTION?
The electric field components due to a charge inside the cube of side 0.1 m are as shown:
Where α = 500 N/C − m
Ey= 0,Ez= 0
Calculate (i) the flux through the cube and (ii) the charge inside the cube
A dipole with its charges -q and +q located at the points (0,-b,0) iand (0,b,0) is present in a uniform electric field E.The euqipotential surfaces of this field are planes parallel to the y-z planes .
i) What is the direction of the electric field E?
ii) How much torque would the dipole experience in this field ?
a car moving with a speed of 40km/hr can be stopped by applying brakes after at least 2m.If the same car is moving with 80km/hr.What is the least stopping distance?
How many electrons are present in 1 coulomb of charge?
When three charges q,q and -q are placed at the vertices of an equilateral triangle,what is the force on each charge?...plzzz explain and answer
Copyright © 2019 Applect Learning Systems Pvt. Ltd. All rights reserved.
E.g: 9876543210, 01112345678
We will give you a call shortly, Thank You
Office hours: 9:00 am to 9:00 pm IST (7 days a week)