Three magnets A, B and C were dipped one by one in a heap of iron filings. It shows the amount of the iron filling sticking to them:
The strength of these magnets will be:
A>B>C
A < B < C
A=B=C
A < B > C
(1)
If we place the magnetic compass near the north pole of the magnet, which pole of the needle will point towards it?
North pole
South pole
Keep deflecting
None of these
(2)
As like poles repel each other and unlike poles attract each other. Therefore, when the North pole of a bar magnet is brought near the compass, it gets deflected in the south direction.
In the circuit shown below, what is direction of the current?
No current flowing
Anti-clock wise
Clock wise
Data insufficient
(3)
If the current flows from North to South the compass needle will move towards the last.
A proton enters a magnetic field at right angle to it, as shown below. The direction of force acting on the proton will be:
To the right
To the left
Out of the page
Into the page
(4)
The proton enters a magnetic field at right-angle to it. Therefore, it will experience a force and the direction of force is calculated using Fleming’s Left-Hand Rule.
A bar magnet is immersed in a heap of iron fillings and pulled out. The amount of iron filling clinging to the:
North pole is almost equal to the South pole
North pole is much more than the South Pole
North pole is almost less equal than the South pole
Magnet will be same all along its length
(1)
As the maximum intensity of magnet is on the poles of the magnet.
Rashita and her friends were decorating the class bulletin board. She accidentally dropped the box of stainless steel pins by mistake. She tried to collect the pins using a magnet. She could not succeed. Why?
They are not using the magnet in right direction
Steel pins are very heavy and cannot be lifted magnet
Steel pins are very long
Steel is not magnetic in nature
(4)
As steel is not magnetic in nature, so it is not attracted by the magnet.
If the current is passing through a straight conductor, then, the magnetic field lines around it forms a particular shape. That shape is:
Straight lines
Concentric circles
Concentric ellipse
Concentric parabolas
(2)
When current passes through a straight conductor, then the magnetic field lines forms concentric circle around it.
The figure given below shows the magnetic field produced by a currents carrying wire. Which of the diagram shows it correctly?
A
B
C
D
(3)
As when current flows through current-carrying wire, then direction of magnetic field is calculated by right hand thumb rule.
Consider the following statements and choose the correct are:
A magnet is an object which attracts pieces of iron, Nickel and cobalt
Magnetic effect of electric current means that an electric current flowing in a wire produces a magnetic field around it
The end of a freely suspended magnet which points towards the north direction is called the north pole of the magnet
All of the above
(4)
(a) A magnet is an object which attracts pieces of iron, Nickel and cobalt.
(b) Magnetic effect of electric current means that an electric current flowing in a wire produces a magnetic field around it.
(c) The end of a freely suspended magnet which points towards the north direction is called the north pole of the magnet.
A rectangular loop carrying a current I is situated near a long straight wire such that the wire is parallel to one of the sides of the loop and is in plane of the loop. If steady current I is created in wire as shown in figure below, then the loop:
Rotate about an axis parallel to the wire
Move towards the wire
Move away from the wire or towards right
Remains stationary
(2)
(Directed towards the wire)
