north carolina school of science and mathematics

An iron rod can be converted into a magnet by passing an electric current through an insulated coil wound around it. When the current flows, the iron bar gets magnetised. One end becomes North Pole and the other the South Pole. If the direction of the current is reversed, the North..

An iron rod can be converted into a magnet by passing an electric current through an insulated coil wound around. When the current flows, the iron bar gets magnetised. One end becomes North Pole and the other the South Pole. If the direction of the current is reversed, the North..

Ampere's swimming rule states that "if a man swims along the wire carrying current such that his face is always towards the magnetic needle with current entering his feet and leaving his head then the North Pole of the magnetic needle is always deflected towards his left hand..

Sheep are reared for wool, skin and meat. They are domesticated in Rajasthan, Kutch, Saurashtra, North Gujarat, Deccan Plateau, Kashmir, Himachal Pradesh, hilly districts of Uttar Pradesh, Sikkim and Arunachal Pradesh. The important breeds in our country are Nellore and Mandya. Crossbreed..

Question 1 - Question: How can you find the direction of a magnetic field at a given point in the magnetic line of force? Answer: By placing a magnetic compass at the given point. It will indicate the North-South directio..

Rule for Determining the Direction of Magnetic Field in a Coil Carrying Current - If a coil carrying current is suspended by thin elastic long conductors, it will align itself as the compass needle, i.e., one end of the coil will point in the north direction and the other end will point t..

Mapping of Magnetic Lines of Force - A pictorial representation that gives the direction of the magnetic field at various points in a magnetic field is called a map of the magnetic field Let us now map the magnetic field by using a compass Fix a sheet of paper on a drawing board Place a bar magnet ..

Question 1 - Question: A magnetic field line is used to find the direction of 1. south-north 2. a bar magnet 3. a compass needle 4. magnetic field Answer:..

A solenoid is a long coil (shaped like a cylinder) containing a large number of close turns of insulated copper wire. The figure above shows a solenoid SN whose ends are connected to a battery B through a switch X. When a current is passed through a solenoid, it produces a magnetic field around ..

Question: An electric current passes through a straight wire in the direction of south to north. Magnetic compasses are placed at points A and B as shown in the figure. What is your observation? 1. The needle will not deflect 2. Only one of the needles will deflect 3. ..