Advertisements
Advertisements
प्रश्न
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:
- What is observed when a current is passed through the aluminium rod from end B to end A?
- 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?
उत्तर
- The rods move if a current is sent through them from B to A. The force acting on the current carrying rod is what is responsible for this displacement. The rod is pulled to the left by the magnet, which causes a deflection of the rod in that direction.
- No change is observed when 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. Since there is no force, so their will be no motion.
APPEARS IN
संबंधित प्रश्न
When the current is switched on through a wire, a compass needle kept nearby gets deflected from its north-south position. Explain.
What is Maxwell's corkscrew rule? For what purpose is if used?
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.
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 The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly.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 ______.
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.
Identify the given figure, write the labels of it.
A uniform magnetic field exists in the plane of paper pointing from left to right as shown in Figure. In the field an electron and a proton move as shown. The electron and the proton experience
______ are also used to remove splinters of steel or iron in hospitals dealing with eye injuries.
Define the magnetic effect of electric current.
