What is an equipotential surface? State two of its properties.
Electrostatics
Original Khojo Papers practice question — not from a past board paper.
1 μF in series and 4 μF in parallel.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
In series 1/C = 1/2 + 1/2, so C = 1 μF. In parallel C = 2 + 2 = 4 μF. Capacitors combine the opposite way round from resistors.
From the same topic and chapter, at a similar level.
What is an equipotential surface? State two of its properties.
Electrostatics
Three capacitors of 3 μF, 6 μF and 9 μF are joined in parallel across 100 V. Find the total capacitance and the total charge stored.
Electrostatics
What is a dielectric, and how does inserting one between the plates of a capacitor change its capacitance?
Electrostatics
State Gauss's theorem and use it to find the field of an infinite line of charge.
Electrostatics
A capacitor of 10 μF is charged to 100 V. Find the energy stored in it.
Electrostatics
Calculate the electric field at a point 0.3 m from a point charge of 2 × 10−6 C in air.
Electrostatics