Question

Two circular loops of equal radii are placed coaxially at some separation. The first is cut and a battery is inserted in between to drive a current in it. The current changes slightly because of the variation in resistance with temperature. During this period, the two loops
(a) attract each other
(b) repel each other
(c) do not exert any force on each other
(d) attract or repel each other depending on the sense of the current.

Answer 1

Lenz's Law is Followed

Explanation:

1. Look at circles As an and B set co-axially as above.  
2. Give the course of the current in circle. An a chance to be clockwise when a battery is associated with it.  
3. As indicated by the right-hand screw rule, the bearing of the attractive field because of this present will be towards left.
4. Presently, the current through this circle will diminish with time because of increment in opposition with temperature.
5. Thus, the attractive field because of this present will likewise diminish with time.  
6. This changing current will prompt current in circle B. Presently, as per Lenz's law, the bearing of the instigated current in circle B will be with the end goal that it will contradict the diminishing in the attractive field because of circle A.  
7. Thus, current will be instigated clockwise way in circle B. Additionally, on the grounds that the heading of the flows in the circles is the equivalent, they will draw in one another.