Answer to Question #204407 in Electricity and Magnetism for Ikeoluwa Oluwasegu

Question

A wire loop is hung from a pendulum and it swings through a

magnetic field as shown from a to d.

a) As the pendulum swings from a to b, the right hand side of the loop

enters the field. Use the right hand rule to determine the direction of

the induced current.

b) As the pendulum swings from c to d, the right hand side has left the

field and the left side is still moving through the field. Use the right

hand rule to determine the direction of the induced current.

c) While the pendulum swings from b to c, the entire loop is in the field and both the right

side of the loop and the left side of the loop are moving through the field. Use the right

hand rule to justify the lack of induced current.

Answer 1

a. To use the right hand grip rule, curl your fingers and point your right thumb in the direction of the current's flow. The curled direction of the produced magnetic field will be mirrored by the curled direction of your fingers.

b. Fleming's right hand rule can be used to identify the direction of generated electric current in electromagnetic induction. Stretch the forefinger, middle finger, and thumb such that they are all perpendicular to each other, according to this rule. If the forefinger is pointing in the direction of the magnetic field and the thumb is pointing in the direction of the conductor's motion, the center finger is pointing in the direction of the induced current in the conductor.

c. The right hand rule states: point your right thumb toward the velocity (v), your index finger toward the Magnetic Feld (B) to deduce the direction of a magnetal force on a positive moveable load, and your mid-finger will point to a consequent magnetal force.