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Use the right hand rule. Take out your right hand, wrap your hand around the loop, your fingertips should curve to the direction of the wiring, that is, the current should be coming out from your wrist to your fingertip, and the direction of your thumb is the magnetic fieled produced. The thumb is N, and the other is S.
Alternative AnswerThe left-hand 'grip' rule for determining the magnetic polarity of an electromagnet applies for ELECTRON FLOW current direction -i.e. current flow from negative to positive. Grasp the electromagnet with the curl of the fingers pointing in the same direction as the electron flow current, and the thumb will indicate the north pole end of the electromagnet.
For CONVENTIONAL FLOW (positive to negative), we use the right-hand 'grip' rule instead.
What else can I help you with?
Describe how to use the right-hand rule to determine the polarity of an electromagnet?
To use the right-hand rule for determining the polarity of an electromagnet, hold your right hand with your thumb pointing in the direction of the current flow. Your fingers should curl in the direction of the magnetic field. The side of the electromagnet where your fingers point is the north pole, while the opposite side is the south pole.
How can a polarity of an electromagnet be determined if the direction of current flow is known?
The polarity of an electromagnet can be determined by the right-hand rule. If the direction of the current flow is known, curl your right hand fingers in the direction of the current flow. Your thumb points in the direction of the north pole of the electromagnet.
How can the polarity of an electromagnet be determined if the direction of current flow is unknown?
The polarity of an electromagnet can be determined using the right-hand rule: wrap your fingers around the coil in the direction of the current flow (conventional current flow is from positive to negative), with your thumb pointing in the direction of the magnetic field. The side of the coil where your thumb points is the north pole of the electromagnet.
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 rule is used to find out polarity of a current carrying solenoid?
To determine the polarity of a current-carrying solenoid, use the right-hand grip rule. Point your right thumb in the direction of the conventional current flow in the solenoid coil (from positive to negative) and wrap your fingers around the coil in the direction of the current. Your outstretched fingers will then indicate the polarity of the solenoid: the tip of your fingers shows the north pole, while your palm indicates the south pole.
How can you determine the direction of north using a watch?
To determine the direction of north using a watch, hold the watch flat and point the hour hand towards the sun. The midpoint between the hour hand and 12 o'clock on the watch face will indicate the direction of south. North will be in the opposite direction.
What is an example of polarity?
The definition of Polarity is -The uneven distribution of charges across a molecule -.so examples of polarity would be *water molecule with 2 positive hydrogen atoms and 1 negative oxygen atom *left hand and a right hand *east and west -.it's basically anything that is opposites
How do you find the polarity of capacitor wikianswerscomQHow do you find the polarity of capacitor?
To determine polarity in CAPACITORS:Electrolytic capacitors are often marked with a stripe. That stripe indicates the NEGATIVE lead.If it's an axial leaded capacitor (leads come out of opposite ends of the capacitor), the stripe may be accompanied by an arrow that points to the negative lead.Sometimes, you can look to the length of the leads as an indication of polarity. The positive lead is usually longer but be careful if you're reusing old or 2nd hand capacitors - the leads may have been trimmed.Tantalum capacitors are often marked with a '+'sign.http://www.westfloridacomponents.com/polarity.html
Does a battery use an electromagnet?
No, a battery does not use an electromagnet. A battery generates electrical energy through a chemical reaction within it, which creates a flow of electrons in a circuit. An electromagnet, on the other hand, uses electricity to create a magnetic field when the electric current passes through a coil of wire.
How can one determine their temperature without using a thermometer?
One way to determine your temperature without using a thermometer is by placing your hand on your forehead or chest to feel for warmth. You can also check for symptoms like sweating or chills, which can indicate a fever.
What are Real world examples of polarity?
south and north pole or left and right hand or a girl and a boy
What information should I have at hand in order to determine how much memory I need for upgrading my desktop computer?
You will need to know what software you will be using to operate your system to help determine the amount of memory needed.
