Treasure Inspiration
Magnetism & Electromagnetism
T

Induced magnetism and Earth's field

Push a bit harder. Apply what you know to less familiar problems.

Combined Science · Medium

5

questions · ~4 min · 3 hints each (−5 pts)

Confidence tracking, 3-tier hints and instant feedback.

What you'll learn

Each question helps you build key knowledge and skills.

  • 1A permanent magnet always produces its own magnetic field.
  • 2An induced magnet only becomes magnetic when placed in a magnetic field, and loses magnetism quickly when removed.
  • 3Earth behaves like a giant bar magnet, which is why compasses point north.
  • 4A current-carrying wire produces a circular magnetic field, and a solenoid (coil) produces a field like a bar magnet.

Question mix

A mix of question types to build your skills.

  • Multiple choice×4
  • True / False×1

Different question types help you think in different ways.

How it works

A simple 3-step process

  1. 1

    Rate your confidence

    Tell us how sure you feel before answering. It helps us understand your starting point.

  2. 2

    Use hints if stuck

    Get up to 3 helpful hints per question. Each hint costs 5 Treasure Points.

  3. 3

    See what went wrong

    Get instant feedback with clear explanations, so you can learn and improve.

Ready when you are

This takes about 4 minutes.