The force of repulsion between two electrons at a certain distance is F. The force between two protons separated by the same distance is (mp=1836mₑ)
Options
(a) 2F (b) F (c) 1836F (d) […]
The electric potential at a point (x,y,z) is given by V = – x²y – xz³ + 4. The electric field E⃗ at that point is
Options
(a) E⃗ = i 2xy + […]
Two point charge +9e and +e are at 16 cm away from each other. Where should another charge q be placed between them so that the system remains in equilibrium?
Options
(a) 24 […]
The net electric force on a charge of +3μC at the mid-point on the line joining two charges of magnitude +2μC and -2μC seperated by the same distance of 6mm, is
Options
(a) 6000N […]
Two positive ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, the number of electrons missing from each ion will be ( […]
Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The capacitance and breakdown voltage of the combination will be
Options
(a) 3C, V/3 (b) C/3, 3V (c) […]
Two capacitors of 10pF and 20pF are connected to 200V and 100V sources, respectively. If they are connected by the wire, then what is the common potential of the capacitors?
Options
(a) 133.3V […]
An Electric charge does not have which of the following properties?
Options
(a) Total charge conservation (b) Quantisation of charge (c) Two types of charge (d) Circular line of force
Correct Answer:
Circular line […]
The mean free path of electrons in a metal is 4 x 10⁻⁸ m. The electric field which can give on an average 2 eV energy to an electron in the metal will be in […]
The capacitance of two concentric spherical shells of radii R₁ and R₂ (R₂>R₁) is
Options
(a) 4πε₀R₂ (b) 4πε₀(R₂-R₁)/R₁R₂ (c) 4πε₀R₁R₂/(R₂-R₁) (d) 4πε₀R₁
Correct Answer:
4πε₀R₁R₂/(R₂-R₁)
Explanation:
No explanation available. Be the first […]
2017-2025 Copyright Doctor Dreams Training Academy - About Us - Privacy Policy - Terms & Conditions - Contact Us - Refund Policy