1800662
Descrição
Mapa Mental por alexpalex99, atualizado more than 1 year ago
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Criado por alexpalex99
quase 10 anos atrás
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Electromagnets
- A wire carrying a current has a magnetic field around it
- Magnetic fields show the strength, shape and direction of the force.
- Magnetic fields show the strength, shape and direction of the force.
- The magnetic field around a solenoid has the same shape as the field round a bar magnet
- The magnetic field inside the solenoid can be used to magnetise magnetically soft metals
- The strength of the magnetic field can be increased by: Using a larger current. Using more turns of wire on the coil, using a 'soft ' iron core, bringing the poles closer together
- The strength of the magnetic field can be increased by: Using a larger current. Using more turns of wire on the coil, using a 'soft ' iron core, bringing the poles closer together
- The magnetic field inside the solenoid can be used to magnetise magnetically soft metals
- Electromagnets are used in many things such as:
- The electric bell
- Doorbell
- Electromagnetic relay
- The electric bell
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