A 65-turn coil has a diameter of 14 cm. Find the magnitude of the emf induced in the coil (in V) if it is placed in a spatially uniform magnetic field of magnitude 0.65 T so that the face of the coil makes the following angles with the magnetic field, and the magnetic field is reduced to zero uniformly in 0.2 s.

The value is  

Explanation:

From the question we are told  that

    The number of turns is  n =  65

    The diameter is  

    The magnetic field is  

    The time taken for the magnetic field to be reduced to is

Generally the magnitude of the induced emf is mathematically represented as

Here A is the area of the coil which is mathematically represented as

=>    

=>    

So

=>      

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.