Question

b) How does the magnitude of the induced current depend on the strength of the bar magnet? PHY290 c) If the secondary solenoid is in a circuit with resistance R, there will be an induced current, 12 = Discuss how the equations predict the direction of the current in the secondary coil depending on whether the current in the primary coil, 71, is increasing or decreasing. Is it increasing or d) Does this match your decreasing?) s this match your observations? (Hint: Consider the effect of the sign of

Answer 1

b) Induced current is given by:

I = E/R

where E is the induced emf and R is the resistance.

So, Induced current is directly proportional to the induced emf.

Now, E is given by

E = NBA/t

Where N is the number of turns, B is the strength of the magnetic field, A is the area and t is the time. So E is directly proportional to B.

Thus I will also be directly proportional to B.

So, The magnitude of the induced current increases with the strength of the bar magnet and vice versa.

As per Chegg guidelines we can solve only the first question. So, please post the other questions separately. Thank you :)