level: Magnetism and Electromagnetism
Questions and Answers List
level questions: Magnetism and Electromagnetism
| Question | Answer |
|---|---|
| What does a moving charge cause? | Magnetic field |
| What does the right hand thumb rule show? | Shows the direction of magnetic field Thumb points to current and fingers move to magnetic field |
| What is a solenoid? | A coil of wire used to strengthen magnetic fields |
| What is an electromagnet? | A solenoid with an iron core |
| What is the motor effect? | When a current carrying wire is in a a magnetic field and the magnet and the conductor exert a force on each other |
| What does the Flemming's left-had rule show? | Finds the direction of a force; fingers point to field, current and motion |
| Name 2 uses of electromagnets | Scrap yards, can be used in circuits |
| What is the generator effect? | Creates a potential difference in a conductor |
| What does induced current always do? | Oppose the current that created it |