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You might be asking the wrong question. In North America, utilities deliver 120 volts AC at 60 hertz. This means the voltage at your electrical outlet rises to positive 60 volts and then goes to negative 60 volts. The 60 hertz means this happens 60 times a second.
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If you mean you have an outlet with hot and ground or hot and neutral reversed, you should call an electrician. You can buy a cheap tester that will plug in to show you if you have a receptacle mis-wired this way. If the receptacle has a black and white wire connected, and the black wire is not the "hot" wire, it can be tricky to trace down the problem.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoTo change the polarity of current, simply reverse its direction, positive for negative and negative for positive.
Of course, if you have any direction sensitive components, such as diodes, in the circuit, this will not work.
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Which current is having high polarity?
ac(Alternating Current ) has the high polarity.
What is the type of current in the maglev train ac or dc?
maglev train works on alternating current..The electric current supplied to the coils in the guideway walls is constantly alternating to change the polarity of the magnetized coils. This change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust.
Why does the rotation of the motor reversed when change the polarity across the main winding coil?
When changing the auxilary face winding connection the current flow in the winding is changed so that the rotating emf direction is changed . Thats why the motor rotates in opposite direction.
What is ac and DC current?
AC stands for alternating current and means that the current changes directions, flipping repeatedly from positive to negative and back again.DC means direct current, the current only flows in one direction and does not change polarity.
Does Direct current have constant amplitude and polarity?
yes
Will changing the polarity of the current change the polarity of the electo magnet?
Yes!
Which happens to the magnetic field of a wire when you change the direction of the current in the wire?
The polarity of the magnetic field of a wire reverses when you change the direction of the current in the wire.
Which current is having high polarity?
ac(Alternating Current ) has the high polarity.
Will Changing the polarity of a vacuum cleaner's plug cause it to blow instead of suck?
No. you cant change it's polarity because electrical current that a house uses is not a + - type, it changes it's polarity 50 times per second.
Explain welder polarity?
Welder polarity has to do with DC (Direct Current) welders. Essentially, polarity is the direction of the current. Straight polarity means that the current is running from the electrode, to the metal, and back through the grounding clamp. Reverse polarity means that the current is going the opposite way, from the grounding clamp, through the metal, and up through the electrode.
What will happen if you change polarity in parallel circuit?
The current in each branch of the circuit will turn and flow in the other direction.
Why ac current attract?
As we touch an ac supply in which due to body resistance , we create a phase difference between the ac supply and us . As ac reverses polarity , so do we , but our polarity change is opposite to that of the polarity change of ac supply , hence our body gets attracted to the ac supply .
What rule is used to find out polarity of a current carrying solenoid?
right hand rule is used to find out the polarity of current
What is polarity in welding?
Polarity in welding has to do with the direction of the current in the welding process. With direct current (DC) the welding circuit can either be straight, or reverse polarity. When the machine is set for straight polarity, the current flows from the electrode to the weld surface and creates considerable heat in the metal. When the machine is in reverse polarity, the current is backwards and is flowing from the metal to the electrode causing a grater concentration of heat at the electrode.
What is the type of current in the maglev train ac or dc?
maglev train works on alternating current..The electric current supplied to the coils in the guideway walls is constantly alternating to change the polarity of the magnetized coils. This change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust.
Why does the rotation of the motor reversed when change the polarity across the main winding coil?
When changing the auxilary face winding connection the current flow in the winding is changed so that the rotating emf direction is changed . Thats why the motor rotates in opposite direction.
What is ac and DC current?
AC stands for alternating current and means that the current changes directions, flipping repeatedly from positive to negative and back again.DC means direct current, the current only flows in one direction and does not change polarity.
