Metal Core Wheels To Scooter At Europe Electromagnetism Questions?

Electromagnetism Questions? - metal core wheels to scooter at europe

1. Why is it that some metals are attracted to magnets, but some are not?

2. Not all pieces of iron are magnets. How can they be induced to be magnets?

3. Why a magnetic field inside a coil of wire is increased by an iron core in the coil?

4. A magnetic field can change the direction of the electron beam, but can not, their speed. Why not?

5. Like homing pigeons use the Earth's magnetic field to cross?

6. Some bikes have lights that are powered by a generator connected to a wheel of energy. If the bike easier to pedal connect with the light on or off? Why?

7. Why need a power supply?

8. A CD player uses 2 x 1.5 V. If you have a 120vPoint of Sale, which kind of processor you need? What is the ratio between the number should be in the primary to the number of turns in the secondary?

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