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The idea is that the magnetic field of the device reacts with the external magnetic field. If the current is reversed, the magnetic field would also be reversed, and the reading would be the opposite.

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Q: What would happen if the direction of the current through a hall probe is reversed?
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What happens if the direction of current at the terminals of a series motor is reversed?

No changes will occur by wiring a 110 volt motor in reverse polarity, rotation will always be the same. Some single phase motors are designed to be reversed ,but that is a function of the relationship of start windings and capacitors and requires some wiring changes in a motor junction box or an end terminal housing, not by just changing the incoming power.


What happen during positive cycle and negative cycle?

as direction of current reverses it is shown in form of positive and negative cycles


What will happen if you pass ac current passes through a inductor?

magnetic flux will be induced its use to rotate the shaft or given some force


What happens in the circuit when a1N4001 diode experiences its breakdown voltage of 50V?

If a diode breaks down in the reverse direction then, providing there is current-limiting resistance, nothing will happen to the diode. If there is no such current-limiting resistance the diode will be destroyed. Heat is the only enemy of a semiconductor of this type.


What would happen if the positive dc voltage is replaced with a negative dc source?

If you mean what would happen if you connected a DC device backwards, there could be one or two things happen depending on that the device is. If it was a DC motor it would operate in the opposite direction. If it was an electronic device it could burn out some components. Or with today's electronics nothing would happen. Up until a few years ago polarity to electronic devices was crucial that it be connected correctly. In today's electronics a bypass diode is inserted into the voltage supply line that will block the current flow if the connection is reversed. This one little addition to the circuit supply has saved the frying of many electronic components.

Related questions

What happen to an electromagnet's field if the direction of the current ic reversed?

In that case, the magnetic field will also be reversed.


What will happen if all components of a vector are reversed in direction?

Then the resultant vector is reversed.


What happen when you change the direction of current in an electromagnet?

If you change the direction of current in an electromagnet, (which by the way is just a coil of wire) then the direction of the magnetic field will also be reversed: That is to say, what was north is now south. If you want more info. look up "the left hand rule".


What can happen through a change in speed or direction?

velocity can happen


What would happen if an ocean current changed it's direction?

Nothing just that it does not move to that direction


What happens if the direction of current at the terminals of a series motor is reversed?

No changes will occur by wiring a 110 volt motor in reverse polarity, rotation will always be the same. Some single phase motors are designed to be reversed ,but that is a function of the relationship of start windings and capacitors and requires some wiring changes in a motor junction box or an end terminal housing, not by just changing the incoming power.


What happen when you reverse the direction of rotation in a separately excited dc generator?

When reverse the direction of a seperately excited DC generator,only polarities has been reversed,i.e., (+) becomes (-) and (-) become (+).


What happen to the magnetic field of a wire when change the direction of the current in the wire?

Direction of the magnetic lines too would get changed


What happen if all the diode in bridge rectifier is reversed?

it will work as a rectifier . because the AC current to be rectified will not be effected by this change. the out put DC polarity will be changed.


What will happen if you pass dc current through a single coil?

If dc current is passed through a single coil, it is going to remain constant.


What happen when electric current is passed through water'?

when electric current is passed through acidified water hydrogen gas is released at the cathode..


What will happen to an electric wire if a large current passes through it?

It will get hot.