Cambridge A-Level · Physics

Electrostatics

5 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 5 questions

Point charges $+ 4.0 nC$ and $- 1.0 nC$ are fixed $0.30 m$ apart in a vacuum. At a point on the line through them, outside the segment between them, the resultant electric field…
An electron, starting from rest, is accelerated through a potential difference of $2.5 kV$ in a vacuum. What is its final speed, in units of $1 0^{7} m s^{- 1}$ ? (Ignore relativistic effec…
Two capacitors of $4 μ F$ and $12 μ F$ are connected in series. What is the equivalent capacitance (in $μ$ F)?
Two capacitors of $3 μ F$ and $6 μ F$ are connected in series. What is the equivalent capacitance (in $μ$ F)?
Two capacitors of $6 μ F$ and $3 μ F$ are connected in series. What is the equivalent capacitance (in $μ$ F)?

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