हिंदी

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? - Science

Advertisements
Advertisements

प्रश्न

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?



Advertisements

उत्तर

 When the N-pole of a magnet is removed, deflection will take place in left direction because the induced current will flow in other direction.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Magnetic Effects of Electric Current - Exercise 4 [पृष्ठ १०५]

APPEARS IN

लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 2 Magnetic Effects of Electric Current
Exercise 4 | Q 37.1 | पृष्ठ १०५

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

An electromagnet does not attract a piece of iron.


An electric bell has an electromagnet. 


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.


 What device reverses the current?


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 The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly.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 magnet is a rest in the coil? 


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


Observe the following diagram and choose the correct alternative:


(b) State whether the following statements are true or false:

(i) Magnetic poles exist in pairs.

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


Identify the given figure, write the labels of it.


Unscramble the following words:

HTRCO


How does the magnetic effect of electric current help in the working of an electric bell? Explain with the help of a diagram.


______ cells cannot be recharged after use.


What are MCBs? How do they work?


Define the magnetic effect of electric current.


A student was asked to perform an experiment to study the force on a current carrying conductor in a magnetic field. He took a small aluminium rod AB, a strong horse shoe magnet, some connecting wires, a battery and a switch and connected them as shown. He observed that on passing current, the rod gets displaced. On reversing the direction of current, the direction of displacement also gets reversed. On the basis of your understanding of this phenomenon, answer the following questions: 

  1. Why does the rod get displaced on passing current through it?
  2. State the rule that determines the direction of the force on the conductor AB.
    1. If the U-shaped magnet is held vertically and the aluminium rod is suspended horizontally with its end B towards due north, then on passing current through the rod from B to A as shown, in which direction will the rod be displaced?
    2. Name any two devices that use current carrying conductors and magnetic fields.

OR

Draw the pattern of magnetic field lines produced around a current carrying straight conductor held vertically on a horizontal cardboard. Indicate the direction of the field lines as well as the direction of current flowing through the conductor.


As shown in the diagram an aluminium rod 'AB' is suspended horizontally between the two poles of a strong horse shoe magnet in such a way that the axis of rod is horizontal and the direction of the magnetic field is vertically upward. The rod is connected in series with a battery and a key.

State giving reason:

  1. What is observed when a current is passed through the aluminium rod from end B to end A?
  2. What change is observed in a situation in which the axis of the rod 'AB' is moved and aligned parallel to the magnetic field and current is passed in the rod in the same direction?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×