Chapter 21, Problem 72GP

To determine

(a)

The direction of the induced current in the other loop

Answer to Problem 72GP

Solution:

The direction of the induced current in the other loop will be clockwise

Explanation of Solution

Prior to the current in the left-hand circle achieves its enduring state, there will be an incited current in the right-hand circle that will deliver an attractive field into the page to restrict the expansion of the field from the left-hand circle. Subsequently the prompted current will be clockwise.

To determine

(b)

The situation after a long time

Answer to Problem 72GP

Solution:

The situation after a long time will be no induced

Explanation of Solution

After quite a while, the current in the left-hand circle is consistent, so there will be no actuated current in the right-hand curl.

To determine

(c)

The direction of the induced current in the right hand loop

Answer to Problem 72GP

Solution:

The direction of the induced current in the right hand loop counter clock wise

Explanation of Solution

On the off chance that the second circle is pulled to one side, at that point the attractive field out of the page from the left-hand circle during that time circle will diminish. Amid the movement, there will be an instigated current in the right-hand circle that will deliver an attractive field out of the page to contradict the abatement of the field from the left-hand circle. Therefore the actuated current will be counterclockwise.

To determine

(d)

The switch in the left hand loop has been closed a long time when the switch in the right hand loop is closed

Answer to Problem 72GP

Solution:

The switch in the left hand loop has been closed a long time when the switch in the right hand loop is closed will be no effect

Explanation of Solution

Since balance has been achieved ("quite a while"), there is an enduring current in the left-hand circle what's more, relentless attractive motion going through the right-hand circle. There is no emf being initiated in the right-hand circle, so shutting a switch in the right-hand circle has no impact