Suppose this page is perpendicular to a uniform magnetic field and the magnetic flux through it is 5 wb. (The “weber” is the unit for magnetic flux, given by volts×seconds.) If the page is turned by 30 degrees around an edge the flux through it will be:
4.3 wb
Step 1: Given data
Magnetic flux=5 Wb
Step 2: Calculation of the flux
The formula to calculate the flux is:
By substituting the values, we get
5= BA
Here area vector and the magnetic field are in the same direction so the angle is zero.
So,
Now
Therefore,
Step 3: Final answer
Hence, If the page is turned by 30 degrees around an edge the flux through it will be:4.3 Wb