NSEP · Electricity & Magnetism
Electrostatics
Coulomb's law, field, potential, Gauss's law, capacitors, dielectrics.
Test yourself on Electrostatics
5 practice questions for NSEP with instant answers — no signup, ~3 minutes.
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- పరీక్ష shortcuts చూపించండిGive me 3 fastest shortcuts to solve Electrostatics questions in the exam.
- నేను ఏ తప్పులు చేయకూడదు?What are the most common mistakes students make on Electrostatics? How do I avoid them?
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పూర్తి మాక్ తీసుకోండి →Q1 · Electrostatics · MEDIUM
A thin non-conducting ring of radius R carries a total charge Q distributed uniformly. A point charge q is placed at the center of the ring. If the ring is slightly displaced along its axis by a small distance x (x << R), the restoring force on the ring is approximately:
Q2 · Electrostatics · MEDIUM
Two identical metallic spheres of radius R are placed such that their centers are separated by distance d (d >> R). One sphere has charge +Q and the other has charge -3Q. They are connected by a thin wire and then disconnected. The force between them after disconnection is:
Q3 · Electrostatics · MEDIUM
Three identical charges q are placed at the vertices of an equilateral triangle of side a. The work done in bringing another charge q from infinity to the centroid of the triangle is:
Q4 · Electrostatics · MEDIUM
Three identical charges q are placed at the vertices of an equilateral triangle of side a. A charge Q is placed at the centroid of the triangle such that the system is in equilibrium. The value of Q is:
Q5 · Electrostatics · MEDIUM
Two identical conducting spheres carry charges +Q and –3Q respectively. They are brought into contact and then separated. The final charge on each sphere is: