Chapter 22, Problem 34 GO The drawing shows a straight wire carrying a current I

Question

Chapter 22, Problem 34 GO The drawing shows a straight wire carrying a current I. Above the wire is a rectangular loop that contains a resistor R. If the current I is decreasing in time, what is the direction of the induced current through the resistor R eft-to-right or right-to-left? If the induced current goes from left to right through the resistor, type the letters LTR" in the box below. If the current goes from right to left through the resistor, type the letters "RTL in the box. Direction of Induced current -[

Explanation / Answer

Given is :-

Current I is in left direction and decreasing.

We know that change in current produces a magnetic flux and its direction can be found out by right hand rule.

Thus Due to this current the magnetic flux will be produced into the rectangular loop which is pointed into the page/screen and this magnetic flux will also be decreasing with time.

Now according to Lenz's law the emf induced into the rectangular loop will be such that it opposes the change in the magnetic flux therefore the direction of the current in the resistance R will be left to right so that it supports the reducing magnetic flux.

Hence, The induced current through resistance R is from left to right (LTR)

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