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Physics Electromagnetic Induction Level: High School

A square loop of wire of side 0.20 m has a total resistance of 0.60 ohm . The loop is positioned in a uniform magnetic field B of 0.030 T . The field is directed into the page , perpendicular to the plane of the loop , as shown above .

a) Calculate the magnetic flux through the loop .

The field strength now increases uniformly to 0.20 T in 0.50 s.

b) Calculate the EMF induced in the loop during this period .

c)

i) Calculate the magnitude I of the current in the loop during this period .

ii) What is the direction of the current in the loop ?

d) Describe a method by which you could induce a current in the loop if the magnetic field remained constant .

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