Potential Energy of a Magnetic Dipole (bar magnet) in a Magnetic Field: We know that the magnitude of a torque acting on a dipole is- This torque tends to align the dipole in the direction of the field.The work to be done in rotating the dipole against the action of the magnetic torque. This work […]
Potential Energy of a Magnetic Dipole (bar magnet) in a Magnetic Field Read More »
Torque on a Magnetic Dipole (bar magnet) in a Uniform Magnetic Field: Let a bar magnet is placed in a uniform magnetic field B. The length of the bar magnet is 2l and strength of each pole m. The magnet is held at angle theta with the direction of B. These equal and
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Bar Magnet as an Equivalent Solenoid: Magnetic field lines for a bar magnet and a current carrying solenoid Re resemble very closely. Therefore a bar magnet can be thought as a large number of circulating currents in analogy with a solenoid. Let i be the current passing through a solenoid, a be the radius
Magnetic Dipole: A magnetic dipole is an arrangement of two magnetic poles of equal and opposite strength separated by a small distance. Example– A bar magnet and a compass needle, etc. Magnetic Dipole Moment: Magnetic dipole moment is the product of the strength of either pole of the magnetic length of the magnet. It is
The Magnetic field Lines: The magnetic field lines in a magnetic field are those imaginary lines which continuously represented the direction of the magnetic field. Their properties are as follows- 1. The magnetic field lines form a closed loop like electric field lines. 2. The direction of magnetic field lines N to S (for outside)
The Bar Magnet: The bar magnet has two poles similar to the positive and negative charges of an electric dipole. One pole is designate as North pole and the other as South pole. When a bar magnet is suspended freely, these poles point approximately towards the geographic North and South poles, respectively.
Force Between Two Magnetic Poles: The force of attraction or repulsion F between two magnetic poles of strengths m1 and m2 separated by distance r is directly proportional to the product of the poles strengths and inversely proportional to the square of the distance between their centres.
Magnet: A magnet is a material or an object that produces a magnetic field. The magnetic field is invisible but is responsible for most notable property of magnet. Magnets are two types- (a) Natural magnets (b) Artificial magnets
