![]() ![]() Then, the thumb will point to the direction of magnetic field within the solenoid. In this case, point the wrapped fingers (along the coil) in the direction of the conventional current. Right-hand rule can be used to find the direction of the magnetic field. It is measured in Webers per square meter equivalent to Teslas T. The gaussis a unit of flux density and is a much smaller unit than the tesla(1 G 10-4T). Flux Density (B) is related to Magnetic Field (H) by BH. A area (m2) Magnetic Flux Karl Friedrich Gauss, German Mathematician, 17771855 To measure magnetic fields, an instrument called a gaussmeteris used. Reversing the direction of the current reverses the direction of the magnetic field. B B.ABAcos definition Magnetic flux density Magnetic Flux Density is amount of magnetic flux through unit area taken perpendicular to direction of magnetic flux.using a soft iron core within the solenoid.increasing the number of coils in the solenoid and.Strength of the magnetic field can be increased by:.Lenz’s law tells us that the induced EMF will try to fight this: the EMF that is induced will tend to drive currents which 'oppose' (as in the solenoid due to the coil-mutual inductance) the change in magnetic flux. Strength of the field diminishes with distance from the solenoid. THE MAGNETIC FIELD INSIDE THE SOLENOID CHANGES but it happens momentarily as the solenoid restores its original field. Field lines outside the solenoid are similar to that of a bar magnet, and it behaves in a similar way – as if it had a north pole at one end and south pole at the other end.The field lines in this region are parallel and closely spaced showing the field is highly uniform in strength and direction. Current in solenoid produces a stronger magnetic field inside the solenoid than outside. ![]() Hence, the magnetic flux within the solenoid is 0.2 mWb. Substituting values in this formula, we get, 0.031 m 2 × 6.3 mT 0.2 mWb. The magnetic flux within the solenoid is calculated using the formula, AB. Solenoid consists of a length of insulated wire coiled into a cylinder shape. The magnetic field inside the solenoid is found to be 6.3 mT. ![]()
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