Magnetic flux and direction of induced current

michaelw
I am really really hoping that the answer is wrong in the back of my book otherwise my entire basis for electricity/magnetism will be shattered

Basically, there is a picture of a magnetic field going into the page, and there is a coiled loop within this magnetic field. If the magnetic field is decreasing over time, which way will current flow in the loop?

I think that since its decreasing, the coil will induce a current to increase that magnetic field (into the page) and thus, thumb points into the page with right hand, and current flows clockwise (and electrons flow counter clockwise)..

Am I wrong?

Homework Helper
Gold Member
I vote for 'no'.

KingOfTwilight
I say clockwise too.

marlon
michaelw said:
I am really really hoping that the answer is wrong in the back of my book otherwise my entire basis for electricity/magnetism will be shattered

Basically, there is a picture of a magnetic field going into the page, and there is a coiled loop within this magnetic field. If the magnetic field is decreasing over time, which way will current flow in the loop?

I think that since its decreasing, the coil will induce a current to increase that magnetic field (into the page) and thus, thumb points into the page with right hand, and current flows clockwise (and electrons flow counter clockwise)..

Am I wrong?
you are correct.

Can you tell what your book says ?

marlon

heman
michaelw said:
I am really really hoping that the answer is wrong in the back of my book otherwise my entire basis for electricity/magnetism will be shattered

Basically, there is a picture of a magnetic field going into the page, and there is a coiled loop within this magnetic field. If the magnetic field is decreasing over time, which way will current flow in the loop?

I think that since its decreasing, the coil will induce a current to increase that magnetic field (into the page) and thus, thumb points into the page with right hand, and current flows clockwise (and electrons flow counter clockwise)..

Am I wrong?

If you are looking from the top obviously clockwise and from bottom anticlockwise!
Your concepts are right and that's Lenz Rule,observe the orientation well,sometimes they can confuse.!