Skip to main content

Physics module 20 · Put your knowledge to work

Electricity & Magnetism Applications

Practise cells, heating, magnetic effects, and motor problems.

6 problem sets · Learn at your pace · Some resources require membership

From understanding to problem solving.

Your next step

Choose a problem set

Start with a familiar topic, then work towards more demanding problems.

6 of 6 sets

  1. 01Problem studio

    Fields Driving Current Problems

    Charge counting, I = nAvq, drift times, and work from a p.d.

    Open practice
  2. 02Problem studio

    The Heating Effect Problems

    P = IV in all three forms, kilowatt-hour costs, fuses, and cable waste.

    Open practice
  3. 03Problem studio

    Electric Cells Problems

    E.m.f., internal resistance, capacity, matched loads, and efficiency.

    Open practice
  4. 04Problem studio

    Magnetic Effects of Currents Problems

    Straight wires, loops, solenoids, electromagnets, and field superposition.

    Open practice
  5. 05Problem studio

    The Motor Effect Problems

    F = BIL sinθ, charges on circles, coil torque, and levitating wires.

    Open practice
  6. 06Problem studio

    Electricity and Magnetism Calculus Problems

    Charge as area, ∫εI dt energy, exponential discharge, and ∫BI dL forces.

    Open practice
Review the foundations 4 related lessons

Extra challenging questions

Take the ideas further with course-specific extension questions, supplied-data graphs and worked solutions.