हिंदी

Fill in the Following Blanks 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. - Science

Advertisements
Advertisements

प्रश्न

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.

Advertisements

उत्तर

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

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Magnetic Effects of Electric Current - Exercise 2 [पृष्ठ ८२]

APPEARS IN

लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 2 Magnetic Effects of Electric Current
Exercise 2 | Q 11.4 | पृष्ठ ८२

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Describe some experiment to show that the magnetic field is associated with an electric current. 


What is Maxwell's corkscrew rule? For what purpose is if used?


If the direction of electric current in a solenoid when viewed from a particular end is anticlockwise, then this end of solenoid will be:

(a) west pole
(b) south pole
(c) north pole
(d) east pole


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. 


The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was ______.


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 S-pole is inserted?


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? 


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.


Name any two appliances which works on the phenomenon of magnetic effect of electric current.


A soft iron bar is introduced inside the current-carrying solenoid. The magnetic field inside the solenoid ____________.


In the arrangement shown in Figure  there are two coils wound on a non-conducting cylindrical rod. Initially the key is not inserted. Then the key is inserted and later removed. Then


Paheli does not have a night lamp in her room. She covered the bulb of her room with a towel at the night to get dim light. Has she taken the right step? Give one reason to justify your answer.


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


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.


______ cells cannot be recharged after use.


What are MCBs? How do they work?


The figure given below shows the magnetic field around the conductor. Study it and answer the questions:

  1. What changes are caused by increasing current?
  2. What do you see when the magnetic needle is kept a little away from the wire?
  3. In the second part of the figure, the iron filings arrange themselves in a circular manner around the wire. Why does this happen?

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 ______.


Using an electromagnet, you can make a working model of a railway signal as shown in figure.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×