मराठी

Fill in the Following Blanks with Suitable Words: the Magnetic Effect of a Coil Can Be Increased by Increasing the Number of ........... Increasing the ........... Or Inserting an ........... Core.

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प्रश्न

Fill in the following blank with suitable words: 

The magnetic effect of a coil can be increased by increasing the number of ........... increasing the ........... or inserting an ........... core.

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उत्तर

The magnetic effect of a coil can be increased by increasing the number of turnsincreasing the current or inserting an iron core.

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पाठ 5: Magnetic Effects of Electric Current - Exercise 2 [पृष्ठ ८२]

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लखमीर सिंह Physics [English] Class 10
पाठ 5 Magnetic Effects of Electric Current
Exercise 2 | Q 11.3 | पृष्ठ ८२

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

Will the compass needle show deflection when the switch in the circuit shown by figure is closed?


Which effect of current can be utilised in detecting a current carrying wire concealed in a wall? 


The direction of current flowing in the coil of an electromagnet at its two ends X and Y are as shown below:  

  

 What is the polarity of end X?

What is the polarity of end Y?   

Name and state the rule which you have used to determine the polarities. 


Name one device which works on the magnetic effect of current.


A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when:  

 the N-pole is removed?




A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when: 

the magnet is a rest in the coil? 


If fuse of 250 mA, 500 mA, 1 A, 5 A and 10 A were available, which one would be the most suitable for protecting an amplifier rated at 240 V, 180 W?  


How should the electric lamps in a building be connected so that the switching on or off in a room has no effect on other lamps in the same building?


In the Activity shown below, how do we think the displacement of rod AB will be affected if

  1. current in rod AB is increased
  2. a stronger horse-shoe magnet is used
  3. length of the rod AB is increased?
  • Take a small aluminium rod AB (of about 5 cm). Using two connecting wires suspend it horizontally from a stand, as shown in Fig.
  • Place a strong horse-shoe magnet in such a way that the rod lies between the two poles with the magnetic field directed upwards. For this put the north pole of the magnet vertically below and south pole vertically above the aluminium rod (Fig.).
  • Connect the aluminium rod in series with a battery, a key and a rheostat.
  • Now pass a current through the aluminium rod from end B to end A.
  • What do you observe? It is observed that the rod is displaced towards the left. You will notice that the rod gets displaced.
  • Reverse the direction of current flowing through the rod and observe the direction of its displacement. It is now towards the right.
  • Why does the rod get displaced?


A current-carrying rod, AB, experiences a force perpendicular to its length and the magnetic field. Support for the magnet is not shown here, for simplicity.


What is the function of a split ring in an electric motor?


Draw a neat labelled diagram to show the magnetic effect of electric current.


Identify the given figure, write the labels of it.


What is that instrument which can detect the presence of electric current in a circuit?


A magnetic compass shows a deflection when placed near a current carrying wire. How will the deflection of the compass get affected if the current in the wire is increased? Support your answer with a reason.


Magnetic effect of current was discovered by ______.


Why do we cover plug pin holes which are within the reach of children with cellotape or a plastic cover when not in use?


What are MCBs? How do they work?


A wire with green insulation is usually the live wire of an electric supply.


Define the magnetic effect of electric current.


A rectangular loop ABCD carrying a current I is situated near a straight conductor XY, such that the conductor is parallel to the side AB of the loop and is in the plane of the loop. If a steady current I is established in the conductor as shown, the conductor XY will ______.


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