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Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right

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प्रश्न

Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?

Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally towards the front wall from the back wall, is deflected by a strong magnetic field to your right side. Find the direction of the magnetic field.

लघु उत्तरीय
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उत्तर

The direction of the magnetic field is vertically downward. The direction of current is from the front wall to the back wall because negatively charged electrons are moving from the back wall to the front wall. The direction of magnetic force is rightward. Hence, using Fleming’s left-hand rule, it can be concluded that the direction of the magnetic field inside the chamber is downward.

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अध्याय 12: Magnetic Effects of Electric Current - EXERCISE [पृष्ठ २०७]

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एनसीईआरटी Science [English] Class 10
अध्याय 12 Magnetic Effects of Electric Current
EXERCISE | Q 6. | पृष्ठ २०७

संबंधित प्रश्न

State whether the following statement is true or false

The field at the centre of a long circular coil carrying current will be parallel straight lines.


State the form of magnetic field lines around a straight current-carrying conductor.


State whether the following statement is true or false:
The magnetic field inside a long circular coil carrying current well be parallel straight lines.


Fill in the following blank with suitable words: 

For a current-carrying solenoid, the magnetic field is like that of a ...........


State and explain the Clock face rule for determining the polarities of a circular wire carrying current.


What is the shape of field lines inside a current-carrying solenoid? What does the pattern of field lines inside a current-carrying solenoid indicate?


 List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?


A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:

(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same


In a statement of Fleming's left-hand rule, what do the following represent?

(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.


For Fleming's left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.


State Fleming's left-hand rule. Explain it with the help of labelled diagrams.


The force experienced by a current-carrying conductor placed in a magnetic field is the largest when the angle between the conductor and the magnetic field is: 

 45°
 60°
 90°
 180°


What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer. 


Name three factors on which the magnitude of force on a current carrying conductor placed in a magnetic field depends and state how does the force depend on the factors stated by you.


State condition when magnitude of force on a current carrying conductor placed in a magnetic field is maximum?


A flat coil ABCD is freely suspended between the pole of U-shaped permanent magnet with the plane of coil parallel to the magnetic field.

What happens when a current is passed in the coil?


Write Fleming’s left hand rule.


A current-carrying conductor is held in an exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor:


What do you know about Michael Faraday?


A copper wire is held between the poles of a magnet

The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?


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