The number of turns in the coil of an $AC$ generator are $50$ and its cross-sectional area is $2.5 \ m^2$. This coil is revolving in a uniform magnetic field of strength $0.3 \ T$ with a uniform angular velocity of $60 \ rad \ s^{-1}$. The resistance of the circuit comprising the coil is $500 \ \Omega$. The maximum induced $emf$ and maximum current produced in the generator are:

• A
  $2.25 \ kV, 4.5 \ A$
• B
  $2.25 \ kV, 2.5 \ A$
• C
  $4.5 \ kV, 4.5 \ A$
• D
  $3.25 \ kV, 2.5 \ A$