Constants express your answer to three significant figures and include the appropriate units. an l-r-c series circuit has l-0.550 h, c-6.00 μf. and r = 320 ω. at t = 0 the current is zero and the initial charge on the capacitor is 2.80 x 10 4 c a-value units submit ▼ part b what is the value of the constant φ? express your answer in the range from-3.1416 radians to 31416 radians express your answer using three significant figures.