For these question, it has two separate equations: 2f(a) and f(2a) .
For f(2a) equations its x=2a, so you must substitute 2a into the f(x) equation
For 2f(a), it means the two time of f(a) equation with x=a, so you substitute a inti f(x) equation first, then you multiply it by 2.
Answer:
The maximum induced emf is
Explanation:
From the question we are told that
The number of turns is
The area of the square wire coil is
The frequency of rotation is
The earth magnetic field at that location is
The induced emf is mathematically represented as
At the maximum
So
Where
is the angular velocity which is mathematically represented as
Substituting values
The maximum induced emf is