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प्रश्न
Answer the following question.
What is the magnitude of the charge on an electron?
उत्तर
The magnitude of the charge on an electron is 1.6 × 10−19 C.
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संबंधित प्रश्न
Mark out the correct options.
Two large conducting plates are placed parallel to each other with a separation of 2⋅00 cm between them. An electron starting from rest near one of the plates reaches the other plate in 2⋅00 microseconds. Find the surface charge density on the inner surfaces.
Two particles A and B with charges q and 2q, respectively, are placed on a smooth table with a separation d. A third particle C is to be clamped on the table in such a way that the particles A and B remain at rest on the table under electrical forces. What should be the charge on C and where should it be clamped?
The electric force experienced by a charge of 1.0 × 10−6 C is 1.5 × 10−3 N. Find the magnitude of the electric field at the position of the charge.
A positively charged glass rod is brought close to a metallic rod isolated from ground. The charge on the side of the metallic rod away from the glass rod will be ______.
Two small spheres 18 cm apart have equal negative charges and repel each other with the force of 6 × 10-3 N. Find the total charge on both spheres.
Two small conducting spheres of equal radius have charges +10 µC and -20 µC respectively and placed at a distance R from each other experience force F1· If they are brought in contact and separated to the same distance, they experience force F2. The ratio of F1 to F2 is ____________.
A conducting sphere of radius 0.104 m has an unknown charge. If the electric field at 0.20 m from the centre of the sphere is 1.5 x 103 NC-1 and points radially inward, what is the electric flux?
Ionization of a neutral atom is the ______.
In figure two positive charges q2 and q3 fixed along the y-axis, exert a net electric force in the + x-direction on a charge q1 fixed along the x-axis. If a positive charge Q is added at (x, 0), the force on q1 ______.
(1) |
(2) |
Electric charge is uniformly distributed along a long straight wire of radius 1 mm. The charge per cm length of the wire is Q coulomb. Another cylindrical surface of radius 50 cm and length 1 m symmetrically enclose the wire as shown in the figure. The total electric flux passing through the cylindrical surface is ______.
When a glass rod is rubbed with silk, it ______.
Which of the following graphs shows the variation of electric field E due to a hollow spherical conductor of radius R as a function of distance from the centre of the sphere?
Two identical metallic spheres A and B when placed at certain distance in air repel each other with a force of F. Another identical uncharged sphere C is first placed in contact with A and then in contact with B and finally placed at midpoint between spheres A and B. The force experienced by sphere C will be:
Two identical conducting spheres with negligible volume have 2.1 nC and -0.1 nC charges, respectively. They are brought into contact and then separated by a distance of 0.5 m. The electrostatic force acting between the spheres is ______ × 10-9N.
[Given: 4πε0 = `1/(9xx10^9)` SI unit]
A straight infinitely long cylinder of radius R0 = 10 cm is uniformly charged with a surface charge density σ = + 10-12 C/m2. The cylinder serves as a source of electrons, with the velocity of the emitted electrons perpendicular to its surface. Electron velocity must be ______ × 105 m/s to ensure that electrons can move away, from the axis of the cylinder to a distance greater than r = 103 m.
The electrostatic potential inside a charged spherical ball is given by `Phi = ar^2 + b`, where r is the distance from the centre a, and b are constants. Then the charge density inside the ball is ______.
A charge of magnitude 3e and mass 2m is moving in an electric field E. The acceleration imparted to the charge is ______.
The potential at a point x (measured in µm) due to some charges situated on the X-axis is given by v(x) = `20/((x^2 - 4)` V. The electric field E at x = 4 µm is given by ______.
