Assam CEE Electric Charges and Fields — practice questions
20 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Assam CEE Electric Charges and Fields in the app →Quantisation of electric charge means:If 10⁹ electrons leave a body every second, the time required to accumulate a total charge of 1 C is approximaA charge of −12 nC is given to a body. The number of excess electrons on the body is:In any process the total electric charge of an isolated system is conserved. This means:When a glass rod is rubbed with silk, the glass rod becomes positively charged because:Coulomb's law in vacuum is F = (1/4πε₀)(q₁q₂/r²). The value of 1/4πε₀ is approximately:Two point charges q₁ and q₂ separated by distance r in vacuum experience force F. If both charges are doubled The SI unit of electric field is:Two point charges +q and −q are placed at positions (−a, 0) and (+a, 0). The electric field at the origin (0, The electric field on the **axis of a dipole** (dipole moment p, distance r from centre, r >> a) is given by:The electric field on the **equatorial line** of a dipole (perpendicular bisector, r >> a) has magnitude:A dipole of moment p is placed in a uniform external field E. The torque on the dipole is:A dipole of moment 10⁻²⁹ C·m is placed in a uniform field of 10⁵ N/C at angle 30°. The torque on the dipole isGauss's law states that the electric flux through any closed surface is:If a point charge is placed **outside** a closed Gaussian surface, the total flux through the surface is:Using Gauss's law, the electric field due to an **infinite plane sheet of charge** with surface charge densityFor a uniformly charged thin spherical shell of radius R and total charge Q, the electric field INSIDE the sheLinear charge density λ has SI units:Electric field lines for a static charge:Two point charges +4q and +q are placed at a distance L apart. At what distance from +4q (on the line joining