Question4 Physics Electricity I don't have so much time pls it's urgent!

4) RLC circuit (40 points) An RLC circuit has a resistance R = 100 9, an in—ductance L : 1H and a capacitor of unknown capac-itance C. After the capacitor is fully charged and thecircuit is closed a damped oscillation with angular speedwe 2 271' f0 is observed, Where the frequency is f0 = 20 Hz. R L C a: What is the inductance C? (12 points) b: The energy stored in the magnetic field within theinductor is maximal (5 points) 1. When the voltage reaches its maximum D 2. When the current reaches its maximum D