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What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from Fleming’s left-hand rule?

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प्रश्न

What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from Fleming’s left-hand rule?

संक्षेप में उत्तर
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उत्तर

According to the right-hand thumb rule, the thumb shows the direction of electric current as shown in the figure given below.

The curled fingers holding the conductor give the direction of magnetic lines.

Fleming's left-hand rule gives the direction of force experienced by a current-carrying straight conductor placed in an external magnetic field and here thumb represents force on the conductor.

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अध्याय 13: Magnetic Effects of Electric Current - Short Answer Questions [पृष्ठ १००]

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एनसीईआरटी एक्झांप्लर Science Exemplar Class 10
अध्याय 13 Magnetic Effects of Electric Current
Short Answer Questions | Q 18. | पृष्ठ १००

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 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.


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?


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.


State Fleming’s left hand rule.


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


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


Fill in the following blank with suitable words: 

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


Name any two factors on which the strength of magnetic field produced by a current-carrying solenoid depends. How does it depend on these factors?


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

(a) from top towards bottom
(b) from left towards right
(c) from bottom towards top
(d) from right towards left 


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


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


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


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


The strength of magnetic field around a current-carrying conductor is ____________.


Which of the following factors affect the strength of force experience by current-carrying conduct in a uniform magnetic field?


The direction of force on a current carrying conductor in a magnetic field is given by ____________.


A simple motor is made in a school laboratory. A coil of wire is mounted on an axle between the poles of a horseshoe magnet, as illustrated.

In the example above, coil ABCD is horizontal and the battery is connected as shown.

  1. For this position, state the direction of the force on the arm AB.
  2. Why does the current in the arm BC not contribute to the turning force on the coil?

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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