Magnetic force can be generated by electric current, but can electric current be generated by magnetic force?

A)yes, when motion interrupts the lines of the magnetic field
B)No, a magnetic field is produced by magnetized materials.
C)yes, when current passes through a magnetic field
D)No, magnetic fields exist only when both poles are present.

7. Which of the following might happen to a magnet entering a magnetic field?

I. attraction
II. repulsion
III. magnetization

A)I and II B)II and III
C)I and III D)III only

Question

Magnetic force can be generated by electric current, but can electric current be generated by magnetic force?

 A)yes, when motion interrupts the lines of the magnetic field   
B)No, a magnetic field is produced by magnetized materials.  
 C)yes, when current passes through a magnetic field   
D)No, magnetic fields exist only when both poles are present.  
 
7. Which of the following might happen to a magnet entering a magnetic field?

I. attraction
II. repulsion
III. magnetization

 A)I and II   B)II and III  
 C)I and III   D)III only

anonymous · Answer

please help...

shamim · Answer

change of magnetic field strength within a loop creats current into that loop

anonymous · Answer

I think the answer to the first question will be A) You shove a circuit into a region containing magnetic field, a current will flow through it.

shamim · Answer

Its faradays law of electromagnetic induction

anonymous · Answer

As far as the second one is concerned i am not sure about the magnetisation part. I thought that magnet gets even more magnetised when placed in magnetic field due to alignment of dipoles in the magnet.But I am sure it can undergo both attraction and repulsion in suitable magnetic fields. So the answer has to be A) as there is no option which says all three are correct.

anonymous · Answer

thank you so much big help :)