a)
In a room, a beam of electron is moving from the wall at your
back to the wall at your front. The magnetic field in the room
is perpendicular upward. In what direction the beam will be
deflected?
(b) A magnet is placed near a solenoid connected with a
galvanometer as shown in figure. What will be the deflection
in galvanometer.
c)
Write the application of Fleming's right hand rule
Answers
Answer:a beam would be deflected upwards
B Will deflect in opposite direction
C Generator
Explanation:
Explanation:
a)
In the given condition we have the magnetic field lines perpendicular to the direction of moving charges then here in this case we can apply the Fleming's left-hand rule to determine the force acting on the charges (here electrons).
We analyse by applying the rule on the vertically upwards magnetic field lines and the electron beam moving from the back wall to the front in a room, then we conclude that the electrons will be deflected left side of the room.
b)
As we know that according to the Faraday's law the rate of change in flux induces an emf voltage in a close circuit conductor. So when the magnet is in motion while it is being brought near the solenoid there will be a deflection in the galvanometer but after the magnet stops moving there will be no change in the magnetic flux in the coil and hence there will be no deflection in the needle of the galvanometer.
c)
Fleming's right-hand rule is used to determine the direction of the magnetic field around a direct current carrying conductor when the direction of flow of current is known and vice-versa.
In this rule we place our right hand's thumb pointing in the direction of the flow of current and then we curl our fingers like an act of gripping the conductor the direction of the fingers hence represent the direction of magnetic field.
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TOPIC: magnetic induction
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