0
What is produces when you move an iron bar through a wire coil?
Wiki User
∙ 14y ago
electricity
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How does a current in the coil make the straw pointer move?
1.Current in the coil produces a magnetic fieldalso accept "the coil becomes an electromagnet"or "the coil is magnetized"2.The magnet is repelled or attractedalso accept "the field or coil exerts a force on themagnet"
How does a loudspeaker work in terms of the motor effect?
The loudspeaker, as in the dynamo and electric motor, uses the priciple of electrical induction in a conductor through movement inside a magnetic field. The sound information (from any source) is conveted to constantly varying electrical signals, these are amplified and fed to a coil at the speaker. In simple terms, the current in the coil produces a magnetic field which varies as the sound varies and this then forces a soft iron rod, which is connected to the speaker baffle (large sheet of cardboard that produces the sound waves) to move in and out, so causing waves in the air around it, which is sound.
How does a coil affect a motor?
..because of coil it creates magnetic field through the magnet, the coil contains electric charges and it continue to move, upward and downward. The significant of coil is to store electric charges.
What are the three ways in which voltage can be induces in a wire?
Voltage can never be induced in a straight open wire because flux through a wire is zero but a coil made up of a wire can have induced voltage. Methods Move a magnet to and fro through the coil, the magnitude can be changed by altering the relative velocities between them Move the coil relative to he still magnet Place the coil in a time varying magnetic field such that the flux linked through the coil changes with respect to time Place the coil tn an uniform magnetic field and alter its area with respect to time
Describe how a simple generator produces electric energy?
A copper wire coil is rotated at speed in a magnetic field, to cause electrons to move. This is the electric current. The stronger the magnets and/or thicker the copper coil, the more current is produced
How can iron filings be separated from the soil sample?
Iron is magnetic so move a magnet through your soil sample to remove all the iron fillings.
Can you use what was a 3 phase motor as a windmill that produces single phase power?
No. To generate an electrical voltage you have to move the flux of a magnet through a coil of wire or vice versa. In a three phase motor there is no magnetic flux in the armature to cut the stator coils.
If the evaporator coil is clogged so almost no air passes through what will happen?
With no air flow through the coil the ability to cool a house will be diminished severely. The coil will also over cool itself and eventually ice up and stop all air flow. This could result in overheating the blower motor as it cannot move air through a blocked coil.
What makes skeletal muscles move?
The nervous system produces electrical impulses which make muscles move through a sliding filament mechanism.
Can a magnet cause an electric current to flow through a wire?
You obviously cannot more a magnet through a coil in the direction of the current, because the magnet must move, axially, along the length of the coil, while the current moves radially, around the coil. However, if you move a conductor within a coil carrying a d.c. current, then the magnet will induce a voltage into that coil which will oppose the voltage applied to the coil.
How fast does food move through the pancreas?
Food does not move through the pancreas. While the pancreas produces substances that react chemically with food in the small intestines, the food does not come into contact with the pancreas.
What is a moving coil ammeter?
A moving-coil ammeter is an analogue ammeter, used to measure direct current. It works on the same principle as an electric motor, whereby a pivoted coil, located between the two poles of a horseshoe magnet, will rotate when current is passed through it. The movement is restricted by a pair of hairsprings, which means that the moving coil will move through an angle that is proportional to the current. A pointer, attached to the coil, sweeps across a suitably-graduated scale, to indicate the value of current passing through the coil.
