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In the Simple Electric Motor of Figure Given Below, the Coil Rotates Anticlockwise as Seen by the Eye from the Position X When Current Flows in the Coil - Science

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प्रश्न

In the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from the position X when current flows in the coil  

 

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

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उत्तर

The current is flowing in clockwise direction around the coil when viewed from above.
Using Fleming's left-hand rule, the direction of current can be found.

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पाठ 2: Magnetic Effects of Electric Current - Exercise 3 [पृष्ठ ९३]

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लखमीर सिंह Physics (Science) [English] Class 10
पाठ 2 Magnetic Effects of Electric Current
Exercise 3 | Q 31 | पृष्ठ ९३

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.


State qualitatively the effect of inserting an iron core into a current-carrying solenoid.

 

Name the rule for finding the direction of magnetic field produced by a straight current-carrying conductor.


What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?


Draw a sketch to show the magnetic lines of force due to a current-carrying straight conductor.


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


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?


The magnetic field lines in the middle of the current-carrying solenoid are?

(a) circles
(b) spirals
(c) parallel to the axis of the tube
(d) perpendicular to the axis of the tube


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


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 


Which way does the wire in the diagram below tend to move? 

 


 force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it. 


 A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in Figure.

  1. In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil?
  2. Why is a commutator necessary for continuous rotation of the coil?
  3. Complete the diagram with commutator, etc. for the flow of current in the coil?

State two ways to increase the speed of rotation of a D.C. motor.


State Fleming’s left-hand rule.


The following diagram shows two parallel straight conductors carrying the same current. Copy the diagram and draw the pattern of the magnetic field lines around them showing their directions. What is the magnitude of the magnetic field at a point 'X' which is equidistant from the conductors? Give justification for your answer.


State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be maximum.


When current is parallel to a magnetic field, then force experience by the current-carrying conductor placed in a uniform magnetic field is ____________.


An alpha particle enters a uniform magnetic field as shown. The direction of force experienced by the alpha particle is ______.


Two LED bulbs of 10W and 5W are connected in series. If the current flowing through 5W bulb is 0.005A, the current flowing through 10W bulb is ______.


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