10. In a loop in a closed circuit, the sum of the currents entering a junction e

Question

10. In a loop in a closed circuit, the sum of the currents entering a junction equals the sum of the currents leaving a junction because (a). the potential of the nearest battery is the potential at the junction. (b). there are no transformations of energy from one type to another in a circuit loop (c). capacitors tend to maintain current through them at a constant value. (d). current is used up after it leaves a junction. (e). charge is neither created nor destroyed at a junction Bonus Question (10 points) The circuit in the figure below has been connected using a switch S. Let Ri = 8.00 and R2-5.00 & 1 a) What is the charge the capacitor after many many seconds? (b) If the battery is disconnected from the circuit to two thirds its initial voltage? , over what time interval does the capacitor discharge

Explanation / Answer

In a loop in a closed circuit the sum of currents entering the junction = the current leaving the junction because the charge cannot be created or destroyed at the junction or at any point in the circuit.

This is also callled the continuity equation in Electrodynamics.

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