Crash Course | MHT-CET | Physics | Magnetic Effects of Electric Current | Lecture 2

00:08 A charged particle moves through magnetic field perpendicular to its direction. Then:
01:42 A solenoid is connected to a battery so that a steady current flows through it. If an iron core is inserted into the solenoid, then the current in the coil:
04:36 Two parallel conducting wires of equal length are placed distance 'd' apart carry currents '1' and 'I,' respectively in opposite directions. The resultant magnetic field at the midpoint of the distance between both the wires is:
09:50 An electron of charge 'e' and mass 'm' is accelerated through a potential difference of 'V' volt. It enters a transverse uniform magnetic field 'B' and describes circular path. The radius of the circular path is:
14:26 A current i flows in a conducting wire of length L. If we bent it in a circular form, then its magnetic dipole moment will be :
16:56 A long solenoid has 200 turns per cm and carries a current 'i'. The magnetic field at its centre is 6.28×10-2 Wb/m². Another long solenoid has 100 turns per cm and it carries a current i/3 What is the value of the magnetic field near the centre of the another solenoid?
19:50 A circular coil carrying current 'I' subtends an angle (π/16)^c. at its centre. The radius of a metal wire is uniform. The magnetic induction at the centre of circular arc is: (μ₁ = Permeability of free space, sin 90° = 1)
22:03 The magnetic induction at the centre of circular coil of area 27 m² is 0.3 T. The magnetic moment of the coil is (μ₁ = permeability of free space)
25:51 A straight wire carrying current I is turned into a circular loop. The magnitude of magnetic moment of the loop is M. The length of the wire is:
28:25 A wire of length 'L' carries a current 'i'. If the wire is turned into a circular coil and kept in a uniform magnetic field 'B', the maximum magnitude of torque in the given magnetic field will be:
31:20 Two identical long parallel wires carry currents I_{1}' and I_{2}' such that I_{1} )I_{2} When the currents are in the same direction, the magnetic field at a point midway between the wires is 6 * 10 ^ - 6 * T If the direction of I_{2} is reversed, the field becomes 3 * 10 ^ - 5 * T The ratio I1/I2 is:
38:38 Three long straight and parallel wires carrying currents are arranged as shown: The wire C which carriers a current of 50A is so placed that it experiences no force. The distance of wire C from wire A is:
42:19The magnetic induction due to an ideal solenoid depends on which of the following quantities?
43:26 A current of 5 A is passed through a straight wire of length 6 cm them the magnetic induction at a point 5 cm from either end of the wire on the same side is: ( mu_{0} = 4pi * 10 ^ - 7 SI unit)
51:34 A metallic wire is bent into the shape as shown in figure and it carriers a current 'I'. All three circular arcs of radii 'a', '2a' and '3a' have common centre 'O'. The magnetic field at the point 'O' normally inward is:
56:46 An electric charge moving with uniform velocity has:
57:09 A current '/' flows in a circular arc of radius 'r', of a wire which subtends an angle (π/9)^c at its centre. The magnetic induction ' B' at the centre of the circular arc is ( mu_{0} = permeability of free space):
58:06 A circular coil carrying current 'I' has radius 'r' and 'n' turns. The magnetic field along the axis of the coil at a distance (2sqrt(2)) * r from its centre is: (μ₁ = Permeability of free space)
1:01:50 A circular coil of radius 'R' is carrying current '/' in anticlockwise sense. A long straight wire is carrying current '/' in the negative direction of x-axis. Both are placed in the same plane and the distance between centre of coil and straight wire is 'd'. The magnetic field at the centre of the coil will be zero for the value of 'd' equal to:
1:04:30 A toroid has a core of inner radius 'r' and outer radius 'r₂' 2 around which 'N' turns of wire are wound. If the current in the wires is 'I' then the magnetic field inside the toroid is (μ₁ = permeability of free space):
1:06:45 A current of 10 A is passing through a long wire which has semicircular loop of the radius 20 cm as shown in the figure. Magnetic field produced at the centre of the loop is
1:10:56 Two concentric coils each of radius equal to 2 cm are placed at right angles to each other. 3 A and 4 A are the currents flowing in each coil respectively. The magnetic induction in Wbm² at the centre of the coils will be
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[@Bhumika_Mali_13]

Thank you so much sir 🙏🏼 Type of questions are excellent 😊

[@venkypunjabi_physics]

Most welcome All best for upcoming exam

[@Bhumika_Mali_13]

@@venkypunjabi_physics thanks sir🙏🏼