JEE Mains Physics 2002-2019 Solved Video Solutions
The resistance of a galvanometer is 50 ohm and the maximum current which can be passed though it is 0.002 A. What resistance must be connected to it in order to convert it into an ammeter of range 0–0.5 A ?
20
Nov
The resistance of a galvanometer is 50 ohm and the maximum current which can be passed though it is 0.002 A. What resistance must be connected to it in order to convert it into an ammeter of range 0–0.5 A ? A circular coil having N turns and radius r carries a current I. It [...]
A rigid square loop of side ‘a’ and carrying current I2 is lying on a horizontal surface near a long current I1 carrying wire in the same plane as shown in figure. The net force on the loop due to wire will be :
20
Nov
A rigid square loop of side ‘a’ and carrying current I2 is lying on a horizontal surface near a long current I1 carrying wire in the same plane as shown in figure. The net force on the loop due to wire will be : A circular coil having N turns and radius r carries a [...]
A rectangular coil (Dimension 5 cm x 2.5 cm) with 100 turns, carrying a current of 3 A in the clock-wise direction, is kept centered at the origin and in the X-Z plane. A magnetic field of 1 T is applied along X-axis. If the coil is tilted through 45º about Z-axis, then the torque on the coil is
20
Nov
A rectangular coil (Dimension 5 cm x 2.5 cm) with 100 turns, carrying a current of 3 A in the clock-wise direction, is kept centered at the origin and in the X-Z plane. A magnetic field of 1 T is applied along X-axis. If the coil is tilted through 45º about Z-axis, then the torque [...]
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Chapter 13 - Magnetic Effect of Current
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JEE Mains Physics 2002-2019 Solved Video Solutions
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A rectangular coil (Dimension 5 cm x 2.5 cm) with 100 turns ,
carrying a current of 3 A in the clock-wise direction ,
is kept centered at the origin and in the X-Z plane. A magnetic field of 1 T is applied along X-axis. If the coil is tilted through 45º about Z-axis ,
then the torque on the coil is ,
A moving coil galvanometer has resistance 50 Ω and it indicates full deflection at 4mA current. A voltmeter is made using this galvanometer and a 5 kΩ resistance. The maximum voltage, that can be measured using this voltmeter, will be close to
20
Nov
A moving coil galvanometer has resistance 50 Ω and it indicates full deflection at 4mA current. A voltmeter is made using this galvanometer and a 5 kΩ resistance. The maximum voltage, that can be measured using this voltmeter, will be close to A moving coil galvanometer has resistance 50 Ω and it indicates full deflection [...]
Two very long, straight, and insulated wires are kept at 90° angle from each other in xy- plane as shown in the figure These wires carry currents of equal magnitude I, whose directions are shown in the figure. The net magnetic field at point P will be
20
Nov
Two very long, straight, and insulated wires are kept at 90° angle from each other in xy- plane as shown in the figure These wires carry currents of equal magnitude I, whose directions are shown in the figure. The net magnetic field at point P will be and insulated wires are kept at 90° angle [...]
Two magnetic dipoles X and Y are placed at a separation d, with their axes perpendicular to each other. The dipole moment of Y is twice that of X. A particle of charge q is passing through their midpoint P, at angle θ = 45° with the horizontal line, as shown in figure. What would be the magnitude of force on the particle at that instant? (d is much larger than the dimensions of the dipole)
20
Nov
Two magnetic dipoles X and Y are placed at a separation d, with their axes perpendicular to each other. The dipole moment of Y is twice that of X. A particle of charge q is passing through their midpoint P, at angle θ = 45° with the horizontal line, as shown in figure. What would [...]
Posted in:
Chapter 13 - Magnetic Effect of Current
,
JEE Mains Physics 2002-2019 Solved Video Solutions
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Tags:
as shown in figure. What would be the magnitude of force on the particle at that instant? (d is much larger than the dimensions of the dipole) ,
at angle θ = 45° with the horizontal line ,
Two magnetic dipoles X and Y are placed at a separation d ,
with their axes perpendicular to each other. The dipole moment of Y is twice that of X. A particle of charge q is passing through their midpoint P ,
A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field Bi . The torque on the coil due to the magnetic field is
20
Nov
A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field Bi . The torque on the coil due to the magnetic field is A circular coil having N turns and radius r carries a current I. It is held in the [...]
A galaxy is moving away from the earth at a speed of 286 kms^–1. The shift in the wavelength of a red line at 630 nm is x × 10^–10 m. The value of x, to the nearest integer, is…… [Take the value of speed of light c, as 3 × 10^8 ms^–1]
29
Sep
A galaxy is moving away from the earth at a speed of 286 kms^–1. The shift in the wavelength of a red line at 630 nm is x × 10^–10 m. The value of x, to the nearest integer, is…… [Take the value of speed of light c, as 3 × 10^8 ms^–1] A galaxy [...]
Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω cm respectively are connected in parallel. The effective resistivity is ρ Ω cm. The value of ρ, to the nearest integer, is……
29
Sep
Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω cm respectively are connected in parallel. The effective resistivity is ρ Ω cm. The value of ρ, to the nearest integer, is…… is to the nearest integer Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω [...]
Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection. The value of x, to the nearest integer, is
29
Sep
Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection. The value of x, to the nearest integer, is Consider a 72 cm long wire AB as shown in the figure. The [...]