If potential(in volts) in a region is expressed as V(x,y,z) = 6xy – y + 2yz, the electric field (in N/C) at point (1,1,0) is
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(a) -(6i+5j+2k) (b) -(2i+3j+k) (c) -(6i+9j+k) (d) […]
A parallel plate air capacitor has capacity C, distance of seperation between plate is d and potential difference V is applied between the plates. Force of attraction between the plates of the parallel plate air […]
The electric field in a certain region is acting radially outward and is given by E=Ar. A change contained in a sphere of radius ‘a’ centred at the origin of the field, will be given […]
A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just fill the air gap […]
Two thin dielectric slabs of dielectric constants K₁ and K₂, (K₁ < K₂) are inserted between the plates of a parallel plate capacitor, as shown in the figure alongside. The variation of electric field E […]
In a region, the potential is represented by V(x,y,z)=6x-8xy-8y+6yz, where V is in volts and x,y,z are in metres. The electric force experienced by a charge of 2 coulomb situated at point (1,1,1) is
A conducting sphere of radius R is given a charge Q. The electric potential and the electric field at the centre of the sphere respectively are
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(a) zero and Q/4πε₀R² (b) Q/4πε₀R […]
If the force exerted by an electric dipole on a charge q at a distance of 1 m is F, the force at a point 2 m away in the same direction will be
An electric dipole of length 1 cm is placed with the axis making an angle of 30⁰ to an electric field of strength 10⁴ NC⁻¹. If it experiences a torque of Nm, the potential energy […]
Small drops of the same size are charges to V volt each. If n such drops coalesce to form a single large drop, its potential will be
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(a) Vn (b) V/n (c) Vn¹/³ […]
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