Search questions
Use text search or combine filters to find exactly the questions you need.
Class 12 · Physics
→Why cannot the complete electric field be determined only from average density in a non-uniform charge distribution?
Class 12 · Physics
→If the magnitude of surface charge density is high but the area is very small, which statement about total charge is most suitable?
Class 12 · Physics
→For the electric field due to a small positive charge element, what direction is taken at the observation point?
Class 12 · Physics
→For the electric field due to a small negative charge element, what direction is taken at the observation point?
Class 12 · Physics
→In a uniform linear charge distribution, the total charge is negative and the length is positive. What is the sign of the linear charge density?
Class 12 · Physics
→In a uniform surface charge distribution, the surface charge density is negative and the area is positive. What is the sign of the total charge?
Class 12 · Physics
→If the total charge of a distribution is positive, must every small charge element be positive?
Class 12 · Physics
→If the total charge of a volume distribution is zero, is the electric field necessarily zero everywhere?
Class 12 · Physics
→Half of a surface has positive surface charge density and the other half has an equal-magnitude negative surface charge density. What is the total charge?
Class 12 · Physics
→If the average density of a linear charge distribution is zero, which conclusion is not always correct?
Class 12 · Physics
→In a non-uniform linear charge distribution, the local density is zero at one location but nonzero elsewhere. What can be said about the total charge?
Class 12 · Physics
→If the observation point is very near a long charged wire, why does the point-charge approximation become weak?
Class 12 · Physics
→When a point on the perpendicular bisector of a uniformly charged straight rod is taken very far from the rod, what can the rod be approximated as?
Class 12 · Physics
→At a point on the axis of a uniformly charged ring, away from its centre, transverse field components cancel. Which component remains?
Class 12 · Physics
→If only the upper half of a uniformly charged ring is retained, why is the electric field at the centre not zero as it is for a complete ring?
Class 12 · Physics
→The electric field at the centre of a uniformly charged ring is zero. If the ring's total charge is doubled while the distribution remains uniform, what is the electric field at the centre?
Class 12 · Physics
→A solid with uniform volume charge density is divided into three parts of unequal volumes. Which part has the greater volume charge density?
Class 12 · Physics
→A uniformly surface-charged plate is divided into two parts with unequal areas. Which part has the greater surface charge density?
Class 12 · Physics
→A wire with uniform linear charge density is cut into two parts of unequal lengths. Which part has the greater linear charge density?
Class 12 · Physics
→