When switching between the charging and discharging phases in a series RC circui

Question

When switching between the charging and discharging phases in a series RC circuit, A) the current reverses its direction, the voltage across the resistor reverses its polarity, and the voltage across the capacitor reverses its polarity B) the current reverses its direction, the voltage across the resistor reverses its polarity, and the voltage across the capacitor maintains its polarity C) the current reverses its direction, the voltage across the resistor maintains its polarity, and the voltage across the capacitor reverses its polarity. D) the current maintains its direction, the voltage across the across the resistor maintains its polarity, and the voltage across the capacitor reverses its direction. E) none of the above 10 C of positive charge starts the negative end of an Emf, flows back through the Emf to the positive end, then flow through a wire to a resistor, then flows through the resistor, and finally flows back through a wire back to its original starting location. During this process, the 10 C of positive charge: A. supplies Electric Potential Energy to the Emf B. receives Electric Potential Energy from the resistor C. has a net loss of Electrostatic Potential Energy D. has a net gain of Electrostatic Potential Energy E. has no net change in Electrostatic Potential Energy

Explanation / Answer

(17) when a capacitor is charged , it stores energy in its electric field. the plate of the capacitor which is connected to the positive terminal of the battery acquires positive polarity.when the battery is removed and the capacitor discharges, the capapcitor will maintain its polarity but the current now flows in opposite direction .because of the reversal of direction of current, the polarity of the voltage across the resistor reverses.so option B is correct.

(18) when a charge is moved in a closed path, total work is zero as the eletric field is conservative in nature. so the charge has no net change in electrostatic energy.so option E is correct.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

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