What is the Direction of the Field and Current in a Changing Magnetic Field?

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The discussion focuses on determining the direction of current in a coil when subjected to a changing magnetic field. A 200-loop coil experiences a decrease in an external magnetic field from 0.060 T to 0.020 T, directed out of the page. Participants clarify that using the right-hand rule is essential for identifying current direction, where the thumb indicates the magnetic field and curled fingers show current flow. The confusion arises from applying the right-hand rule correctly when the field is directed in or out of the page. Ultimately, understanding the right-hand rule is key to solving the problem of current direction in the coil.
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Homework Statement



A 200-loop coil of cross sectional area 8.5 cm2 lies in the plane of the page. An external magnetic field of 0.060 T is directed out of the plane of the page. The external field decreases to 0.020 T in 12 milliseconds.

Homework Equations


No equation

The Attempt at a Solution


Just trying to figure what would be the direction of the magnetic field and the current in the loop. If the field is going out of the page wouldn't the magnetic flux follow suit? So wouldn't the current in the loop be clockwise? sort of stuck on this part.
 
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superslow991 said:

Homework Statement



A 200-loop coil of cross sectional area 8.5 cm2 lies in the plane of the page. An external magnetic field of 0.060 T is directed out of the plane of the page. The external field decreases to 0.020 T in 12 milliseconds.

Homework Equations


No equation

The Attempt at a Solution


Just trying to figure what would be the direction of the magnetic field and the current in the loop. If the field is going out of the page wouldn't the magnetic flux follow suit? So wouldn't the current in the loop be clockwise? sort of stuck on this part.
Use the right-hand curl rule for magnetic polarity of a current carrying coil.
If the field is coming out of the plane of the page, what should be the current direction?
 
cnh1995 said:
Use the right-hand curl rule for magnetic polarity of a current carrying coil.
If the field is coming out of the plane of the page, what should be the current direction?
That's the problem, right hand rule is kinda tricky for me not sure where to position my fingers for the field going in or out the page
 
superslow991 said:
That's the problem, right hand rule is kinda tricky for me not sure where to position my fingers for the field going in or out the page
Point your thumb out of the page (i.e. towards yourself) and curl your fingers. Thumb represents direction of the field and curled fingers denote the direction of current flow (CW or CCW).
 
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cnh1995 said:
Point your thumb out of the page (i.e. towards yourself) and curl your fingers. Thumb represents direction of the field and curled fingers denote the direction of current flow (CW or CCW).
Thanks a lot
 
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