7. A series R-L-C circuit is driven by a sinusoidally varying EMF source with amplitude of 100V. In the circuit, R = 200 M2, L = 0.5 H, and C= 1.25 F. (a) What is the natural resonance frequency of the circuit in Hz (cycles/sec)? (b) What is Q for this circuit? (c) For what values of the driving frequency, in Hz, is the amplitude of the charge across the capacitor half of its maximum value, and thus what is the full width at half maximum (FWHM) of the resonance peak? (d) What are the phase angles of the current through the resistor with respect to the phase of the driving EMF source at the driving frequencies when the amplitude is half of its maximum? R Elt) ~ elle r