Recent questions tagged marks2

0 votes

0 answers

A steam of electrons travelling with speed `υ m/s` at right angles to a uniform electric field E is deflected in a circular path of radius r. Prove that `e/m=v^2/(rE)` =

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

The distance between the plates of a parallel plate capacitor is d. A metal plate of thickness (d/2) is placed between the plates. What will be the effect on the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A particle of mass m carrying charge `'+q_1 '` is revolving around a fixed charge `'–q_2'` in a circular path of radius r. Calculate the period of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

The force of repulsion between two point charges is F, when these are at a distance of 1 m. Now the point charges are replaced by spheres of radii 25 cm having the charge same as that of point charges. The distance between their centres is 1 m, then compare the force of repulsion in two

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

For the system shown in figure find Q for which resultant force on q is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Two identically charged spheres are suspended by strings of equal length. The strings make an angle of 300 with each other. When suspended in a liquid of density 0.8 g/cc the angle remains same. What is the dielectric constant of liquid. Density of sphere = 1.6

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Calculate the electric field at origin due to infinite number of charges as shown in figures

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A charged particle is kept in equilibrium in the electric field between the plates of millikan oil drop experiment. If the direction of the electric field between the plates is reversed, then calculate acceleration of the charged

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

If a point charge q is placed at the centre of a cube. What is the flux linked (a) with the cube? (b) with each face of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

If a point charge q is placed at one corner of a cube, what is the flux linked with the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

For infinite line distribution of charge draw the curve between log E and log

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A point charge of `0.009 muC` is placed at origin. Calculate intensity of electric field due to this point charge at point `(sqrt2,

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A system has two charges `q_A=2.5×10^(–7) C and q_B = – 2.5 × 10^(–7) C` located at points `A: (0, 0, – 0.15 m) and B ; (0, 0, + 0.15 m)` respectively. What is the total charge and electric dipole moment of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A short electric dipole is situated at the origin of coordinate axis with its axis along x–axis and equator along y–axis. It is found that the magnitudes of the electric intensity and electric potential due to the dipole are equal at a point distant `r=sqrt5 m` from origin. Find the position vector of the point in first

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Prove that the frequency of oscillation of an electric dipole of moment p and rotational inertia I for small amplitudes about its equilibrium position in a uniform electric field strength E is `1/(2pi)

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Brass has a tensile strength `3.5 × 10^8 N'/'m^2` . What charge density on this material will be enough to break it by electrostatic force of repulsion? How many excess electrons per square Å will there then be? What is the value of intensity just out side the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Prove that if an isolated (isolated means no charges are near the sheet) large conducting sheet is given a charge then the charge distributes equally on its two

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

If an isolated infinite sheet contains charge `Q_1` on its one surface and charge `Q_2` on its other surface then prove that electric field intensity at a point in front of sheet will be `Q/(2Aepsilon_0)`, where `Q=

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Three large conducting sheets placed parallel to each other at finite distance contains charges `Q, –2Q and 3Q` respectively. Find electric field at points `A, B , C, and

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Figure shows three large metallic plates with charges `– Q, 3Q and Q` respectively. Determine the final charges on all the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

Recent questions tagged marks2

Categories