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A very long straight wire carries a current of 5.2 A. What is the magnitude of the magnetic field at a distance 3.1 cm from the wire?
Concept: Magnetic Field Produced by a Current in a Circular Arc of a Wire
State any four applications of beats.
Concept: Beats
A strong magnetic field is applied to a stationary electron. Then the electron ______
Concept: Magnetic Fields Due to Electric Current
A circular loop of radius 0.0157 m carries a current 2 A. The magnetic field at the centre of the loop is ______
Concept: Applications of Biot-Savart's Law > Magnetic Field on the Axis of a Circular Current-Carrying Loop
What is Solenoid?
Concept: Applications of Ampere’s Circuital Law > Magnetic Field of a Toroidal Solenoid
A solenoid of length 50 cm of the inner radius of 1 cm and is made up of 500 turns of copper wire for a current of 5 A in it. What will be the magnitude of the magnetic field inside the solenoid?
Concept: Applications of Ampere’s Circuital Law > Magnetic Field of a Toroidal Solenoid
Explain the construction and working of the Moving coil Galvanometer.
Concept: Magnetic Fields Due to Electric Current
The magnetic field at the centre of a circular loop of radius 12.3 cm is 6.4 x 10-6 T. What will be the magnetic moment of the loop?
Concept: Magnetic Lines for a Current Loop
Derive an expression for axial magnetic field produced by current in a circular loop.
Concept: Applications of Biot-Savart's Law > Magnetic Field on the Axis of a Circular Current-Carrying Loop
Calculate the value of magnetic field at a distance of 3 cm from a very long, straight wire carrying a current of 6 A.
Concept: Magnetic Force on a Wire Carrying a Current
What is the value of force on a closed circuit in a magnetic field?
Concept: Force on a Closed Circuit in a Magnetic Field
Obtain an expression for magnetic induction of a toroid of ‘N’ turns about an axis passing through its centre and perpendicular to its plane.
Concept: Applications of Ampere’s Circuital Law > Magnetic Field of a Toroidal Solenoid
Two tuning forks of frequencies 320 Hz and 340 Hz are sounded together to produce a sound wave. The velocity of sound in air is 326.4 m/s. Calculate the difference in wavelengths of these waves.
Concept: Beats
Calculate the current flowing through two long parallel wires carrying equal currents and separated by a distance of 1.35 cm experiencing a force per unit length of 4.76 × 10-2 N/m.
Concept: Force of Attraction Between Two Long Parallel Wires
Concept: Applications of Ampere’s Circuital Law > Magnetic Field of a Toroidal Solenoid
What is 'diffraction of light'
Concept: Fraunhofer Diffraction Due to a Single Slit
Distinguish between ‘paramagnetic’ and ‘ferromagnetic’ substances.
Concept: Magnetic Properties of Materials
In biprism experiment, 10th dark band is observed at 2.09 mm from the central bright point on the screen with red light of wavelength 6400 A. By how much will fringe width change if blue light of wavelength 4800A is used with the same setting?
Concept: Measurement of Wavelength by Biprism Experiment
The numerical aperture of objective of a microscope is 0.12. The limit of resolution, when light of wavelength 6000A is used to view an object is.......................
- 0.25 * 10-7m
- 2.5 * 10-7m
- 25 * 10-7m
- 250 * 10-7m
Concept: Resolving Power of a Microscope and Telescope
Which of the following substances is ductile?
Concept: Magnetic Properties of Materials
