My answers may be wrong, and I need to see work to give five stars. Thanks In th

Question

My answers may be wrong, and I need to see work to give five stars. Thanks

In the circuit of Fit. 28.45, the ammeter rend* 2 A and the voltmeter reads 4 V. Kind the emf nod the For the circuit shown in Fig. 28.47, fine; (a) the current and potential difference for each resistor; (b) the change in potential VA - Va. For the circuit in Fig. 28.78 find: (a) the initial current through each resistor when the switch is closed: (b) the final steady-state current through each resistor: (c) the final energy stored in the capacitor: (d) the time constant when the switch is opened. In the circuit shown in Fig. 328.54, determine: (a) the values of the emf's; (b) the change in potential Vb - Ve, What are the readings on the ammeter and the voltmeter in Fig. 28.51 when (a) the switch is open; (b) the switch is closed? The circuit in Fig. 28.56 includes a capacitor. (a) What is the current in each resistor after a steady steady state has been reached? (b) What is the charge on the capacitor?

Explanation / Answer

bottom left one a) when the switch is just closed C is uncharged so it behaves likes it not there so each resistor sees the whole battery I1 = E/R1 I2 = E/R2 b) steady state C is fully charged and lets no current through so I2=0 R1 stills gets all of the voltage so I1 = E/R1 c) since C gets all of the voltage since no current energy = 1/2 C E^2 d) when the switch is opened R1 and R2 are in series so Rtotal = R1 + R2 so time constant = Rtotal*C = (R1 +R2)C

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.