मराठी

Name One Device Which Works on the Magnetic Effect of Current. - Science

Advertisements
Advertisements

प्रश्न

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

उत्तर

Electric motor works on the magnetic effect of electric current.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Magnetic Effects of Electric Current - Exercise 3 [पृष्ठ ९१]

APPEARS IN

लखमीर सिंह Physics (Science) [English] Class 10
पाठ 2 Magnetic Effects of Electric Current
Exercise 3 | Q 4 | पृष्ठ ९१

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

Name the scientist who discovered the magnetic effect of current.


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.


Fill in the following blank with suitable words:

 If a coil is viewed from one end and the current flows in an anticlockwise direction, then this end is a ........... pole.


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.


(ii) Global warming is a desirable aspect of the intensified greenhouse effect.


Answer the following question:
State the effect on the magnetic needle in Oersted’s experiment when:  
(a) the current is passed through the wire.  
(b) the current through the wire is increased
(c) the current through the wire is reversed. 


Boojho made an electromagnet by winding 50 turns of wire over an iron screw. Paheli also made an electromagnet by winding 100 turns over a similar iron screw. Which electromagnet will attract more pins? Give reason.


______ are also used to remove splinters of steel or iron in hospitals dealing with eye injuries.


Define the magnetic effect of electric current.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×