The electrostatic potential on the surface of a charged conducting sphere is 100V. Two statements are made in this regard S1 at any point inside the sphere, electric intensity is zero. S2 at any point inside the sphere, the electrostatic potential is 100 V. Which of the following is a correct statement?
[2] Electrostatic Potential and Capacitance
Chapter: [2] Electrostatic Potential and Capacitance
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The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is ______.
[2] Electrostatic Potential and Capacitance
Chapter: [2] Electrostatic Potential and Capacitance
Concept: undefined >> undefined
There are two metallic spheres of same radii but one is solid and the other is hollow, then ______.
[2] Electrostatic Potential and Capacitance
Chapter: [2] Electrostatic Potential and Capacitance
Concept: undefined >> undefined
A conductor carries a certain charge. When it is connected to another uncharged conductor of finite capacity, then the energy of the combined system is ______.
[2] Electrostatic Potential and Capacitance
Chapter: [2] Electrostatic Potential and Capacitance
Concept: undefined >> undefined
A coil of circular cross-section having 1000 turns and 4 cm2 face area is placed with its axis parallel to a magnetic field which decreases by 10–2 Wb m–2 in 0.01 s. The e.m.f. induced in the coil is ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
A metallic rod of mass per unit length 0.5 kg m–1 is lying horizontally on a smooth inclined plane which makes an angle of 30°with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction 0.25 T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
A charged particle enters in a uniform magnetic field with a certain velocity. The power delivered to the particle by the magnetic field depends on ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
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A current carrying circular loop of radius R is placed in the x-y plane with centre at the origin. Half of the loop with x > 0 is now bent so that it now lies in the y-z plane.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
A proton and an alpha particle both enter a region of uniform magnetic field B, moving at right angles to field B. If the radius of circular orbits for both the particles is equal and the kinetic energy acquired by proton is 1 MeV the energy acquired by the alpha particle will be ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
Energy in a current carrying coil is stored in the form of ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
A wire is placed parallel to the lines of force in a magnetic field and a current flows in the wire. Then ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
Assertion: The poles of magnet can not be separated by breaking into two pieces.
Reason: The magnetic moment will be reduced to half when a magnet is broken into two equal pieces.
[5] Magnetism and Matter
Chapter: [5] Magnetism and Matter
Concept: undefined >> undefined
Magnetic dipole moment is a vector quantity directed from ______.
[5] Magnetism and Matter
Chapter: [5] Magnetism and Matter
Concept: undefined >> undefined
The plane in which eddy currents are produced in a conductor is inclined to the plane of the magnetic field at an angle equal to ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
Eddy currents do not produce ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
Certain galvanometers have a fixed core made of nonmagnetic metallic material, when the coil oscillates, ...A... generated in the core ...B... the motion and bring the coil to rest ...C...
Here, A, B and C refer to ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
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If in a galvanometer the coil is wound on a bad conductor, the eddy current will be ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
Which of the following does not use the application of eddy current?
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
Induction furnace make use of ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
When strength of eddy currents is reduced, as dissipation of electrical energy into heat depends on the ...A... of the strength of electrical energy into heat depends on the ...A... of the strength of electric current heat loss is substantially ...B.... Here, A and B refer to ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
