मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write Fleming’s left hand rule.

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प्रश्न

Write Fleming’s left hand rule.

टीपा लिहा
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उत्तर

Stretch the index finger, the middle finger, and the thumb of the left hand mutually perpendicular to each other. If the index finger is in the direction of the magnetic field and the middle finger points in the direction of the current, then the thumb will point towards the direction of the force on the conductor.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Effects of electric current - Answer in one sentence. [पृष्ठ १३]

संबंधित प्रश्‍न

Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.


Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)


A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is ______.


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 rule to determine the direction of a force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.


Name the rule for finding the direction of magnetic field produced by 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 ...........


Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles


The front face of a circular wire carrying current behaves like a north pole. The direction of current in this face of circular wire is:

(a) clockwise
(b) downwards
(c) anticlockwise
(d) upwards


What happens when a current-carrying conductor is placed in a magnetic field?


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.


 A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.


 Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field. 


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


A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in Figure below: 

The force on the wire due to the magnet is directed: 

fron N to S
 from S to N
 vertically downwards
 vertically upwards


A horizontal wire carries a current as shown in Figure below between magnetic poles N and S: 

  

Is the direction of the force on the wire due to the magnet:

(a) in the direction the current
(b) vertically downwards
(c) opposite to the current direction
(d) vertically upwards 


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Is the current flowing clockwise or anticlockwise around the coil when viewed from above? 


Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if: 

a current is passed through coil B by plugging the key?  

Explain your answer mentioning the name of the phenomenon involved.

 


Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if: 

the current is stopped by removing the plug from the key? 

Explain your answer mentioning the name of the phenomenon involved. 


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 zero?


Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.


How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field?


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When will coil come to rest?


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

When will the couple acting on the coil be

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What do you know about Michael Faraday?


A copper wire is held between the poles of a magnet

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