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List Three Ways in Which the Magnetic Field Strength of a Current-carrying Solenoid Can Be Increased? - Science

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प्रश्न

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

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उत्तर

 Ways to increase the magnetic field strength of a current-carrying solenoid:
1. By increasing the number of turns in the solenoid
2. By increasing the flow of current passing through the solenoid
3. By using a soft iron rod as core in the solenoid

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Magnetic Effects of Electric Current - Exercise 2 [पृष्ठ ८२]

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लखमीर सिंह Physics (Science) [English] Class 10
पाठ 2 Magnetic Effects of Electric Current
Exercise 2 | Q 22.4 | पृष्ठ ८२

संबंधित प्रश्‍न

The magnetic field in a given region is uniform. Draw a diagram to represent it.


Which of the following correctly describes the magnetic field near a long straight wire?


When is the force experienced by a current-carrying conductor placed in a magnetic field largest?


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?


Observe the following figure:

If the current in the coil A is changed, will some current be induced in the coil B? Explain.


What concealed do you get from the observation that a current-carrying wire deflects a compass needle placed near it?


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

 

 What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?


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


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


The diagram given below represents magnetic field caused by a current-carrying conductor which is: 

 

(a) a long straight wire
(b) a circular coil
(c) a solenoid
(d) a short straight wire 

 


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 


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


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


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

Name an instrument which makes use of the principle stated above.


The shape of the magnetic field lines produced by a current-carrying conductor is ____________.


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?

Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':


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