The current in an ideal long solenoid is varied at an uniform rate of 0.01 A/s. the solenoid has 2000 turns per m and radius is 6cm.
consider a circle of 10 cm inside the solenoid with its axis coinciding with solenoid. Write the change in magnetic flux through this circle in 2 secs.

Question

The current in an ideal long solenoid  is varied at an uniform rate of 0.01 A/s. the solenoid has 2000 turns per m and radius is 6cm.
consider a circle of 10 cm inside the solenoid with its axis coinciding with solenoid. Write the change in magnetic flux through this circle in 2 secs.

anonymous · Answer

158.256 * 10^-8

anonymous · Answer

can u tell me how did u get it ?

anonymous · Answer

find the rate of change of magnetic field intensity dB/dt=$$\mu N di/dt$$
multiply with area of circle to get rate of change of flux
then multiply with time

anonymous · Answer

ty