An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform electric field in time t₁. A proton of mass Mp also initially at rest, takes time t₂ to move […]
A spherical shell of radius 10cm is carrying a charge q. If the electric potential at distance 5cm, 10cm and 15cm from the centre of the spherical shell is V₁,V₂ and V₃ respectively, then
Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each. After the two spheres are joined by a conducting wire, the charge on the smaller sphere is […]
A parallel plate capacitor is charged and then isolated. The effect of increasing the plate seperation on charge, potential and capacitance respectively are,
Options
(a) constant, decreases, increases (b) constant,decreases,decreases (c) constant, increases, […]
Pick out the statement which is incorrect?
Options
(a) A negative test charge experience a force opposite to the direction of the field (b) the tangent drawn to a line of force represents […]
The angle between the dipole moment and electric field at any point on the equatorial plane is
Options
(a) 180° (b) 0° (c) 45° (d) 90°
Correct Answer:
180°
Explanation:
No explanation available. […]
The acceleration of an electron in an electric field of magnitude 50 V/cm, if e/m value of the electron is 1.76×10¹¹ C/kg will be
Options
(a) 8.8×10¹⁴ m/sec² (b) 3×10¹³ m/sec² (c) 5.4×10¹² m/sec² […]
Electric field intensity at a point in between two parallel sheets due to like charges of same surface charge densities (σ) is
Options
(a) σ/2ε₀ (b) σ/ε₀ (c) Zero (d) 2σ/ε₀
Correct Answer: […]
When 10¹⁹elecrons are removed from a neutral metal plate through some process, then the charge on it becomes
Options
(a) (+1.6C) (b) (-1.6C) (c) 10¹⁹C (d) 10⁻¹⁹C
Correct Answer:
(+1.6C)
Explanation:
No explanation […]
The S.I. unit of electric flux is
Options
(a) Weber (b) Newton per coulomb (c) Volt x metre (d) Joule per coulomb
Correct Answer:
Volt x metre
Explanation:
No explanation available. Be the […]
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