Exercise of Electromagnetic Induction

[cuongbui1702]

Homework Statement

Homework Equations

That is my solution:

The Attempt at a Solution

i solve my problem without ø=30°, I confused what this angle was used to do?

 

[Jilang]

Think about what your first formula is actually saying. It the rate of change of the flux through the coil. If the table was flat would there be any flux through it?

 

[rude man]

Homework Statement

Homework Equations

That is my solution:

The Attempt at a Solution

i solve my problem without ø=30°, I confused what this angle was used to do?

If the angle was 90 degrees would there be any flux through the coil?