In Fig. 27-19, a circuit consists of a battery and two

Chapter , Problem 4

(choose chapter or problem)

In Fig. 27-19, a circuit consists of a battery and two uniform resistors, and the section lying along an x axis is divided into five segments of equal lengths. (a) Assume that R j = R2 and rank the segments according Fig. 27-19 Question 4. to the magnitude of the average electric field in them, greatest first. (b) Now assume that RJ > R2 au ESTIONS 725 RC Circuits When an emf 'fl, is applied to a resistance R and capacitance C in series, as in Fig. 27-15 with the switch at a, the charge on the capacitor increases according to (charging a capacitor), (27-33) in which C'fl, = qo is the equilibrium (final) charge and RC = Tis the capacitive time constant of the circuit. During the charging, the current is (charging a capacitor). (27-34) When a capacitor discharges through a resistance R, the charge on the capacitor decays according to (discharging a capacitor). (27-39) During the discharging, the current is i = ~~ = - ( :~ )e-1IRC (discharging a capacitor). (27-40) and then again rank the segments. (c) What is the direction of the electric field along the x axis?