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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.
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उत्तर
If a coil is viewed from one end and the current flows in an anticlockwise direction, then this end is a north pole.
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संबंधित प्रश्न
When the current is switched on through a wire, a compass needle kept nearby gets deflected from its north-south position. Explain.
Will the compass needle show deflection when the switch in the circuit shown by figure is closed?
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Fill in the following blank with suitable words:
If a coil is viewed from one end, and the current flows in a clockwise direction, then this end is a ........... pole.
If the direction of electric current in a solenoid when viewed from a particular end is anticlockwise, then this end of solenoid will be:
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(b) south pole
(c) north pole
(d) east pole
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(a) what is the polarity of end A?
(b) which way will the compass point then?
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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.
When the switch S is closed in the figure given below, the pointer of the galvanometer moves to the right.
If S is kept closed, will the pointer:
(a) return to zero?
(b) stay over on the right?
(c) move to the left and stay there
(d) move to and fro until S is opened
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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:
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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?
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AgCI : White :: CuI2 : ___________
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State the effect on the magnetic needle in Oersted’s experiment when:
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(b) the current through the wire is increased
(c) the current through the wire is reversed.
Magnetic effect of current was discovered by ______.
Unscramble the following words:
HTRCO
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- What do you see when the magnetic needle is kept a little away from the wire?
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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:
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- 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?
