1011 past contests
Topic 41 · Magnetism is produced by moving electric charge
Topic 42 · Impedance and resistance share the same si unit
Topic 13 · Mains electricity frequency supplied in ghana
Topic 63 · Riddle: the antinode of a standing wave
Topic 10 · Moles of a gas from pressure, volume and temperature using the ideal gas law
Topic 60 · Finding the second resistor needed for a given parallel-combination resistance
Topic 59 · Rate of heat developed in a resistive heater from current and resistance
Topic 7 · Current drawn from a resistive heater's power rating and resistance
Topic 16 · Atmospheric pressure holding liquid inside a covered drinking straw
Topic 16 · Why a full glass of water with floating ice does not overflow as the ice melts
Topic 12 · Checking whether an object is genuine gold from its measured density
Topic 11 · Excess torque breaking a bolt during tightening
Topic 62 · Why a sonic boom is heard only after a supersonic aircraft passes overhead
Topic 50 · Time to reach maximum height for a projectile launched at an angle
Topic 62 · Diffraction of sound waves around an obstacle or through an opening
Topic 49 · Polarization of light restricting oscillation to a single plane
Topic 43 · Riddle: dielectric material, filling the space between capacitor plates
Topic 20 · Logical relationships between isotopes, isobars and isotones for three related nuclides (true/false)
Topic 5 · Electrostatic induction on an isolated, insulated neutral conductor near a charged rod (true/false)