Q: Define right hand rule?
Ans: According to right hand rule " if we grasp the current carrying conductor in our right hand with the thumb being stretched in the direction of current, the fingers would curl in the direction of lines of force."
Q: Define flux?
Ans: The number of magnetic lines of force passing through any surface is known as magnetic flux through that surface.
Q: Define left hand rule?
Ans: According to this rule, stretch the thumb, forefinger and the middle finger of the left hand mutually at tight angles to each other. If the forefinger points in the direction of the magnetic field, the diddle finger in the direction of the current, then the thumb would indicate the direction of the force acting on the conductor.
Q: Define Faraday's law ?
Ans: Faraday's law states that "The value of the induced emf is directly proportional to the rate of change of flux."
Q: Define working principle of D.C motor ?
Ans: When a current carrying coil is placed in a magnetic field a couple would act on the coil due to which it rotate in magnetic field. This is the principle on which an D.C motor works.
Q: Define working principle of A.C generator ?
Ans: When a coil rotates in a magnetic field, the flux passing through it continuously changes. This change of flux induces an emf in the coil. This is the principle on which an A.C generator works.
Ans: According to right hand rule " if we grasp the current carrying conductor in our right hand with the thumb being stretched in the direction of current, the fingers would curl in the direction of lines of force."
Q: Define flux?
Ans: The number of magnetic lines of force passing through any surface is known as magnetic flux through that surface.
Q: Define left hand rule?
Ans: According to this rule, stretch the thumb, forefinger and the middle finger of the left hand mutually at tight angles to each other. If the forefinger points in the direction of the magnetic field, the diddle finger in the direction of the current, then the thumb would indicate the direction of the force acting on the conductor.
Q: Define Faraday's law ?
Ans: Faraday's law states that "The value of the induced emf is directly proportional to the rate of change of flux."
Q: Define working principle of D.C motor ?
Ans: When a current carrying coil is placed in a magnetic field a couple would act on the coil due to which it rotate in magnetic field. This is the principle on which an D.C motor works.
Q: Define working principle of A.C generator ?
Ans: When a coil rotates in a magnetic field, the flux passing through it continuously changes. This change of flux induces an emf in the coil. This is the principle on which an A.C generator works.
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