Description : Find the flux density due to a conductor of length 6m and carrying a current of 3A(in 10 -7 order) a) 1 b) 10 c) 100 d) 0.1
Last Answer : a) 1
Description : The force on a conductor of length 12cm having current 8A and flux density 3.75 units at an angle of 300 is a) 1.6 b) 2 c) 1.4 d) 1.8
Last Answer : d) 1.8
Description : Find the magnetic flux density when a point from a finite current length element of current 0.5A and radius 100nm. a) 0 b) 0.5 c) 1 d) 2
Last Answer : c) 1
Description : Find the flux density of a conductor in the square of the centre of the loop having current 3.14A and radius is 1.414m in air. a) 8π x 10 -7 b) 4π x 10 -7 c) 6π x 10 -7 d) 2π x 10 -7
Last Answer : c) 6π x 10 -7
Description : Calculate the flux density due to a circular conductor of radius 100nm and current 5A in air. a) 10 b) 100 c) 0.1 d) 1
Last Answer : a) 10
Description : Find the Lorentz force due to a conductor of length 2m carrying a current of 1.5A and magnetic flux density of 12 units. a) 24 b) 36 c) 32 d) 45
Last Answer : c) 32
Description : Find the force on a conductor of length 12m and magnetic flux density 20 units when a current of 0.5A is flowing through it. a) 60 b) 120 c) 180 d) 200
Last Answer : b) 120
Description : Find the maximum force of the conductor having length 60cm, current 2.75A and flux density of 9 units. a) 14.85 b) 18.54 c) 84.25 d) 7.256
Last Answer : a) 14.85
Description : Given the magnetic field is 2.4 units. Find the flux density in air(in 10 -6 order). a) 2 b) 3 c) 4 d) 5
Last Answer : b) 3
Description : Find the magnetic field intensity due to a solenoid of length 12cm having 30 turns and current of 1.5A. a) 250 b) 325 c) 175 d) 375
Last Answer : d) 375
Description : Find the magnetic field intensity of a material with flux density of 24 units in air(in 10 6 order) a) 19.09 b) 21 c) 25 d) 26.78
Last Answer : a) 19.09
Description : Consider the conductor to be a coil of turns 60 and the flux density to be 13.5 units, current 0.12A and area 16units. The torque will be a) 1555.2 b) 1222.5 c) 525.1 d) 255.6
Last Answer : a) 1555.2
Description : The torque on a conductor with flux density 23 units, current 1.6A and area 6.75 units will be a) 248.4 b) 192.6 c) 175.4 d) 256.9
Last Answer : a) 248.4
Description : Find the total flux in a coil of magnetic flux density 12 units and area 7 units. a) 0.84 b) 0.96 c) 8.4 d) 9.6
Last Answer : a) 0.84
Description : Find the force due to a current element of length 2cm and flux density of 12 tesla. The current through the element will be 5A. a) 1 N b) 1.2 N c) 1.4 N d) 1.6 N
Last Answer : b) 1.2 N
Description : Find the torque of a loop with magnetic moment 12.5 and magnetic flux density 7.65 units is a) 95.625 b) 65.925 c) 56.525 d) 65.235
Last Answer : a) 95.625
Description : Find the magnetic field when a circular conductor of very high radius is subjected to a current of 12A and the point P is at the centre of the conductor. a) 1 b) ∞ c) 0 d) -∞
Last Answer : c) 0
Description : Calculate the magnetic field at a point on the centre of the circular conductor of radius 2m with current 8A. a) 1 b) 2 c) 3 d) 4
Last Answer : b) 2
Description : The line integral of the magnetic field intensity is the a) Current density b) Current c) Magnetic flux density d) Magnetic moment
Last Answer : b) Current
Description : Find the magnetic force when a charge 3.5C with flux density of 4 units is having a velocity of 2m/s. a) 14 b) 28 c) 7 d) 32
Last Answer : b) 28
Description : If the radius of a sphere is 1/(4π)m and the electric flux density is 16π units, the total flux is given by, a) 2 b) 3 c) 4 d) 5
Last Answer : c) 4
Description : Find the flux density of line charge of radius (cylinder is the Gaussian surface) 2m and charge density is 3.14 units? a) 1 b) 0.75 c) 0.5 d) 0.25
Last Answer : d) 0.25
Description : Find the flux density B when the potential is given by x i + y j + z k in air. a) 12π x 10 -7 b) -12π x 10 -7 c) 6π x 10 -7 d) -6π x 10 -7
Last Answer : b) -12π x 10 -7
Description : Calculate the Larmer angular frequency for a magnetic flux density of 12.34 x 10 -10 . a) 108.36 b) 810.63 c) 368.81 d) 183.36
Last Answer : a) 108.36
Description : Find the current density on the conductor surface when a magnetic field H = 3cos x i + zcos x j A/m, for z>0 and zero, otherwise is applied to a perfectly conducting surface in xy plane. a) cos x i b) –cos x i c) cos x j d) –cos x j
Last Answer : b) –cos x i
Description : A circular disc of radius 5m with a surface charge density ρs = 10sinφ is enclosed by surface. What is the net flux crossing the surface? a) 3 b) 2 c) 1 d) 0
Last Answer : d) 0
Description : Find the magnetic field of a finite current element with 2A current and height 1/2π is a) 1 b) 2 c) 1/2 d) 1/4
Description : Calculate the energy when the magnetic intensity and magnetic flux density are 15 and 65 respectively. a) 755 b) 487.5 c) 922 d) 645
Last Answer : b) 487.5
Description : Which quantity is solenoidal in the electromagnetic theory? a) Electric field intensity b) Electric flux density c) Magnetic field intensit d) Magnetic flux density
Last Answer : d) Magnetic flux density
Description : The magnetization is defined by the ratio of a) Magnetic moment to area b) Magnetic moment to volume c) Magnetic flux density to area d) Magnetic flux density to volume
Last Answer : b) Magnetic moment to volume
Description : Find the magnetic flux density when the vector potential is a position vector. a) 1 b) 0 c) -1 d) ∞
Last Answer : b) 0
Description : Find the magnetic flux density when a flux of 28 units is enclosed in an area of 15cm. a) 178.33 b) 186.67 c) 192.67 d) 124.33
Last Answer : b) 186.67
Description : Find the magnetic flux density of the material with magnetic vector potential A = y i + z j + x k. a) i + j + k b) –i – j – k c) –i-j d) –i-k
Last Answer : b) –i – j – k
Description : Identify which of the following is the unit of magnetic flux density? a) Weber b) Weber/m c) Tesla d) Weber -1
Last Answer : c) Tesla
Description : The magnetic flux density is directly proportional to the magnetic field intensity. State True/False. a) True b) False
Last Answer : a) True
Description : Find the flux density of a sheet of charge density 25 units in air. a) 25 b) 12.5 c) 6.25 d) 3.125
Last Answer : b) 12.5
Description : Find the total flux in a material of flux density 15 units in an area of 24 units. a) 3.6 b) 7.2 c) 9.6 d) 5.4
Last Answer : a) 3.6
Description : Find the displacement current when the flux density is given by t 3 at 2 seconds. a) 3 b) 6 c) 12 d) 27
Last Answer : c) 12
Description : The electric flux density of a surface with permittivity of 2 is given by 12 units. What the flux density of the surface in air? a) 24 b) 6 c) 1/6 d) 0
Last Answer : b) 6
Description : An electron is travelling at right angles to a uniform magnetic field of flux density 1.2 mT with a speed of 8 × 106 m s-1, the radius of circular path followed by electron is A. 3.8 cm B. 3.7 cm C. 3.6 cm D. 3.5 cm
Last Answer : 3.8 cm
Description : Find the magnetic field intensity of a toroid of turns 40 and radius 20cm. The current carried by the toroid be 3.25A. a) 103.45 b) 102 c) 105.7 d) 171
Last Answer : a) 103.45
Description : Compute the conductivity when the current density is 12 units and the electric field is 20 units. Also identify the nature of the material. a) 1.67, dielectric b) 1.67, conductor c) 0.6, dielectric d) 0.6, conductor
Last Answer : c) 0.6, dielectric
Description : Find the angle at which the potential due a dipole is measured, when the distance from one charge is 12cm and that due to other is 11cm, separated to each other by a distance of 2cm. a) 15 b) 30 c) 45 d) 60
Last Answer : d) 60
Description : Find the displacement current density of a material with flux density of 5sin t a) 2.5cos t b) 2.5sin t c) 5cos t d) 5sin t
Last Answer : c) 5cos t
Description : Ampere law states that, a) Divergence of H is same as the flux b) Curl of D is same as the current c) Divergence of E is zero d) Curl of H is same as the current density
Last Answer : d) Curl of H is same as the current density
Description : Calculate the displacement current density when the electric flux density is 20sin 0.5t. a) 10sin 0.5t b) 10cos 0.5t c) 20sin 2t d) 20cos 2t
Last Answer : b) 10cos 0.5t
Description : In a medium other than air, the electric flux density will be a) Solenoidal b) Curl free c) Irrotational d) Divergent
Last Answer : d) Divergent
Description : In air, the tangential component of flux density is continuous at the boundary. State True/False. a) True b) False
Description : Find the flux contained by the material when the flux density is 11.7 Tesla and the area is 2 units. a) 23.4 b) 12.3 c) 32.4 d) 21.3
Last Answer : a) 23.4
Description : Find the electric flux density of a material whose charge density is given by 12 units in a volume region of 0.5 units. a) 12 b) 24 c) 6 d) 48
Last Answer : c) 6