a) Give a counterexample to show that the following statement is false: "When the magnetic field through a loop changes, currents run in the loop in such a way as to make a new magnetic field in the opposite direction to the original one."

(b) Two metal rings lie side by side on a table. Current in the left ring runs clockwise and is increasing with time. This induces a current to run in the right ring. Does this induced current run clockwise or counterclockwise? Explain, using a diagram.

a) Give a counterexample to show that the following statement is false:

âWhen the magnetic field through a loop changes, currents run in the

loop in such a way as to make a new magnetic field in the opposite

direction to the original one.â

(b) Two metal rings lie side by side on a table. Current in the left

ring runs clockwise and is increasing with time. This induces a current

to run in the right ring. Does this induced current run clockwise or

counterclockwise? Explain, using a diagram.

AP3

A wire loop is pulled through a region of magnetic fields shown below.

B2

with a constant force F such that the velocity of the loop is constant.

Calculate the speed in terms of the known quantities B1, B2, L, h, R and

F.

(b) Two metal rings lie side by side on a table. Current in the left ring runs clockwise and is increasing with time. This induces a current to run in the right ring. Does this induced current run clockwise or counterclockwise? Explain, using a diagram.

a) Give a counterexample to show that the following statement is false:

âWhen the magnetic field through a loop changes, currents run in the

loop in such a way as to make a new magnetic field in the opposite

direction to the original one.â

(b) Two metal rings lie side by side on a table. Current in the left

ring runs clockwise and is increasing with time. This induces a current

to run in the right ring. Does this induced current run clockwise or

counterclockwise? Explain, using a diagram.

AP3

A wire loop is pulled through a region of magnetic fields shown below.

B2

with a constant force F such that the velocity of the loop is constant.

Calculate the speed in terms of the known quantities B1, B2, L, h, R and

F.

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