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Questions and Answers
A wire carrying a current of 5A is placed perpendicular to a magnetic induction of 2T. The force on each centimeter of the wire is:
A wire carrying a current of 5A is placed perpendicular to a magnetic induction of 2T. The force on each centimeter of the wire is:
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If a soft iron piece is buried under the surface of the earth in the north and south direction, then
If a soft iron piece is buried under the surface of the earth in the north and south direction, then
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Force acting on a stationary charge Q in the magnetic field B is –
Force acting on a stationary charge Q in the magnetic field B is –
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A proton is moving with velocity 104m/s parallel to the magnetic field of intensity 5Tesla. The force on the proton is
A proton is moving with velocity 104m/s parallel to the magnetic field of intensity 5Tesla. The force on the proton is
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A wire of length ‘l' is placed in a magnetic field ‘B’. If the current in the wire is 'I', then maximum magnetic force on the wire is:
A wire of length ‘l' is placed in a magnetic field ‘B’. If the current in the wire is 'I', then maximum magnetic force on the wire is:
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Which of the following statement is correct?
Which of the following statement is correct?
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A magnetic field may:
A magnetic field may:
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Lenz's law is a consequence of the law of conservation of:
Lenz's law is a consequence of the law of conservation of:
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The induced emf produced when a magnet is inserted into a coil does not depend upon:
The induced emf produced when a magnet is inserted into a coil does not depend upon:
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Lenz's law
Lenz's law
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A.C. used in our domestic consumption has a frequency
A.C. used in our domestic consumption has a frequency
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A solenoid having an iron core has its terminals connected across an ideal D.C source. If the iron core is removed, the current flowing through the solenoid is:
A solenoid having an iron core has its terminals connected across an ideal D.C source. If the iron core is removed, the current flowing through the solenoid is:
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Direction of force acting on a current carrying conductor kept in a magnetic field is given by
Direction of force acting on a current carrying conductor kept in a magnetic field is given by
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The unit of induced emf is:
The unit of induced emf is:
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The minimum amount of energy required to emit electrons from a metal surface is called the:
The minimum amount of energy required to emit electrons from a metal surface is called the:
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The work function of tungsten coated with barium oxide is nearly:
The work function of tungsten coated with barium oxide is nearly:
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The electron emitter must have:
The electron emitter must have:
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A TV tube requires an accelerating voltage of the order:
A TV tube requires an accelerating voltage of the order:
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Electrons were discovered by:
Electrons were discovered by:
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The charge on an atom is:
The charge on an atom is:
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Isotones of an element have –
Isotones of an element have –
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An isotones of 32Ge76 is
An isotones of 32Ge76 is
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The triad of nuclei that is isotonic is:
The triad of nuclei that is isotonic is:
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Which particle is used to bombard 13Al28 to give 15P31 and a neutron?
Which particle is used to bombard 13Al28 to give 15P31 and a neutron?
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