Advertisements
Advertisements
Question
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?
Solution
When the S-pole of a magnet is inserted, the deflection of galvanometer needle will take place in left direction.
APPEARS IN
RELATED QUESTIONS
For the coil in the diagram below, when the switch is pressed:
(a) what is the polarity of end A?
(b) which way will the compass point then?
Write the correct option by observing the figures.
In the Activity shown below, how do we think the displacement of rod AB will be affected if
- current in rod AB is increased
- a stronger horse-shoe magnet is used
- length of the rod AB is increased?
|
What is the function of a split ring in an electric motor?
(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.
Draw a neat labelled diagram to show the magnetic effect of electric current.
Identify the given figure, write the labels of it.
Unscramble the following words:
HTRCO
Why do we cover plug pinholes which are within the reach of children with sellotape or a plastic cover when not in use?
______ are also used to remove splinters of steel or iron in hospitals dealing with eye injuries.
