Can someone show how to use the RH rule to find out whether the magnetic field i

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Can someone show how to use the RH rule to find out whether the magnetic field is increase or decrease with time??
Thanks.

10. +1/1 points | Previous Answers My Notes+ Ask Your Teacher A circular loop of wire of resistance R 0.500 ? and radius r= 7.70 cm is in a uniform magnetic field directed out of the page as in the figure below. A clockwise current of I- 3.40 mA is induced in the loop out (a) Is the magnetic field increasing or decreasing in time? O increasing O decreasing (b) Find the rate at which the field is changing with time. 91.267 mT/s Need Help?Read It Submit Answer Save Progress Practice Another Version

Explanation / Answer

here the direction of magnetic field is out of the page.

and induced current is closkwise.

According to lenz's law the direction of induced current is always such as to oppose the change in magnetic flux that genrated it.

the magnetic field direction due to induced current is into the page.

so, the magneticfield is increasing.

If the magnetic field decreases the direction of induced current would counter clockwise.

If B decreases, the direction of magnetic field produced by induced current will be same as existed B.

If B increases, the direction of magnetic field produced by induced current will be opposite to existed B.

RH rule: curl your right hand fingers in the direction of current then your thumb indicates the magnetic field produced by the current in side the loop.

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