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Magnetic Field of a SolenoidMohan tightly wound a very long copper wire on a PVC pipe and carefully took the pipe out. The two ends of the copper wire then attached to a battery. This cylindrical shape of copper wire showed few properties of a bar magnet. Later he found that it is called a solenoid and this solenoid is used in several devices such as door bell, relay switch etc. The magnetic field of a solenoid is given below.The magnetic field strength of a solenoid having n turns is `B=mu_0nl`, where, `I` is the current flowing in the solenoid.The

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Moving Coil GalvanometerMoving coil galvanometer operates on Permanent Magnet Moving Coil (PMMC) mechanism and was designed by the scientist D’arsonval.Moving coil galvanometers are of two types (i) Suspended coil (ii) Pivoted coil type or tangent galvanometer.Its working is based on the fact that when a current carrying coil is placed in a magnetic field, it experiences a torque. This torque tends to rotate the coil about its axis of suspension in such a way that the m agnetic flux passing through the coil is maximum .A moving coil galvanometer is an instrument,

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Moving Coil GalvanometerMoving coil galvanometer operates on Permanent Magnet Moving Coil (PMMC) mechanism and was designed by the scientist D’arsonval.Moving coil galvanometers are of two types (i) Suspended coil (ii) Pivoted coil type or tangent galvanometer.Its working is based on the fact that when a current carrying coil is placed in a magnetic field, it experiences a torque. This torque tends to rotate the coil about its axis of suspension in such a way that the m agnetic flux passing through the coil is maximum .To make the field radial in a moving coil

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Moving Coil GalvanometerMoving coil galvanometer operates on Permanent Magnet Moving Coil (PMMC) mechanism and was designed by the scientist D’arsonval.Moving coil galvanometers are of two types (i) Suspended coil (ii) Pivoted coil type or tangent galvanometer.Its working is based on the fact that when a current carrying coil is placed in a magnetic field, it experiences a torque. This torque tends to rotate the coil about its axis of suspension in such a way that the m agnetic flux passing through the coil is maximum .The deflection in a moving coil galvanometer

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Moving Coil GalvanometerMoving coil galvanometer operates on Permanent Magnet Moving Coil (PMMC) mechanism and was designed by the scientist D’arsonval.Moving coil galvanometers are of two types (i) Suspended coil (ii) Pivoted coil type or tangent galvanometer.Its working is based on the fact that when a current carrying coil is placed in a magnetic field, it experiences a torque. This torque tends to rotate the coil about its axis of suspension in such a way that the m agnetic flux passing through the coil is maximum .In a moving coil galvanometer, having a coil of A-turns of area A and carrying

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Moving Coil GalvanometerMoving coil galvanometer operates on Permanent Magnet Moving Coil (PMMC) mechanism and was designed by the scientist D’arsonval.Moving coil galvanometers are of two types (i) Suspended coil (ii) Pivoted coil type or tangent galvanometer.Its working is based on the fact that when a current carrying coil is placed in a magnetic field, it experiences a torque. This torque tends to rotate the coil about its axis of suspension in such a way that the m agnetic flux passing through the coil is maximum .To increase the current sensitivity of a moving coil galvanometer, we should

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A natural bar

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The relation between the magnetic length `(L_e)` and the geometric length `(L_g)` is best represented

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Two magnets have the same length and the same pole strength. But one of the magnets has a small hole at its centre.

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Magnetic lines of force due to a bar magnet do not intersect,

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If the magnet is cut into four equal parts, such that their lengths and breadths are equal, then pole strength of each part

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A bar magnet of magnetic moment `M_1` is axially cut into two equal parts. If these two pieces are arranged perpendicular to each other, the resultant magnetic moment is `M_2`, then the value of `M_1'/'M_2`

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Electron is revolving around a nucleus in circular orbit of radius `1 A` with a speed `4 xx 10^4` m/s. Magnetic moment produced due to rotation of electron

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Magnetic moment of an electron in the first orbit

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Which of the following expression represents the relation between orbital magnetic moment and orbital angular momentum of an

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An electron of charge `e` moves in a circular orbit of radius `r` around the nucleus at a frequency `v`. The magnetic moment associated with the orbital motion of the electron

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Which of the following point lies in the region of highest magnetic field strength

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At the same place, the horizontal component of earth’s magnetic field is 0.40 G and the angle of dip is 30°. What is the resultant magnetic

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The relations amongst the three elements of earth’s magnetic field namely : horizontal component `H_e` vertical component `V_e` and angle of dip `delta` are (`B_e` = total magnetic

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The angle of dip at a certain place on the earth is 60° and the magnitude of the earth’s horizontal component of magnetic field is 0.26 G. The magnetic field at the place on the earth

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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