Table of Contents
- 1 How did Joseph Henry discover electromagnetic induction?
- 2 Who discovered a relation between magnetic and electric field?
- 3 What did Michael Faraday and Joseph Henry discover?
- 4 Which devices use electromagnets?
- 5 Who invented electric field?
- 6 Which is stronger of the two electric field or magnetic field?
- 7 What are the 3 main ingredients that characterize a generator?
How did Joseph Henry discover electromagnetic induction?
Henry developed the electromagnet into a practical device. He invented a precursor to the electric doorbell (specifically a bell that could be rung at a distance via an electric wire, 1831) and electric relay (1835)….
| Joseph Henry | |
|---|---|
| Nationality | American |
| Spouse(s) | Harriet Henry (née Alexander) |
Who discovered a relation between magnetic and electric field?
Oersted
Oersted made the discovery for which he is famous in 1820. At the time, although most scientists thought electricity and magnetism were not related, there were some reasons to think there might be a connection.
Who discovered inferred changing magnetic field electric field?
Faraday
Faraday’s discovery of electric induction. Faraday, the greatest experimentalist in electricity and magnetism of the 19th century and one of the greatest experimental physicists of all time, worked on and off for 10 years trying to prove that a magnet could induce electricity.
What did Michael Faraday and Joseph Henry discover?
December 17, 1797 – May 13, 1878 Interestingly, Henry appears to have discovered the principle of electromagnetic induction independently of British scientist Michael Faraday, but because Faraday published his results before Henry, he is credited with the discovery.
Which devices use electromagnets?
Electromagnets are very widely used in electric and electromechanical devices, including:
- Motors and generators.
- Transformers.
- Relays.
- Electric bells and buzzers.
- Loudspeakers and headphones.
- Actuators such as valves.
- Magnetic recording and data storage equipment: tape recorders, VCRs, hard disks.
- MRI machines.
What is the right hand rule of magnetism?
The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, point your right thumb in the direction of the velocity (v), your index finger in the direction of the magnetic field (B), and your middle finger will point in the direction of the the resulting magnetic force …
Who invented electric field?
Michael Faraday
The concept of the electric field was introduced by Michael Faraday.
Which is stronger of the two electric field or magnetic field?
The way in which charges and currents interact with the electromagnetic field is described by Maxwell’s equations and the Lorentz force law. The force created by the electric field is much stronger than the force created by the magnetic field.
What does a transformer actually transform?
A transformer is an electrical device that uses electromagnetic induction to pass an alternating current (AC) signal from one electric circuit to another, often changing (or “transforming”) the voltage and electric current.
What are the 3 main ingredients that characterize a generator?
External source of energy as fuel , wind, or water. A moter is characterized by three main ingredients: magnetic field, moving charges, and magnetic force. What are the three main ingredients that characterize a generator?