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What is the voltage across the capacitor immediately after closing the switch?
Answers: The initial capacitor voltage is zero. Before the switch is closed, the charge Q on the capacitor is zero and the voltage across the capacitor = V = Q/C = 0. Right after the switch is closed, the charge has not had time to build up on the capacitor and the charge and voltage are still zero.
What happens to the voltage across R3 when the switch is closed?
Transcribed image text: When the switch (S) shown in is closed, what will happen to the voltage across resistor R1? R www S R3 R4 It will increase. It will stay the same. It will decrease.
What happens to the voltage when the switch is closed?
Before the switch is closed, there is no voltage or current across either the resistor or the inductor. When the switch is first closed, the current through the inductor is zero, because it cannot change instantaneously. When this happens, the current is no longer changing, so the voltage across the inductor is zero.
What happens to the voltage across the resistor R4 when the switch is closed?
What happens to the voltage across the resistor R4 when the switch is closed? We just saw that closing the switch causes an increase in the voltage across R1 (which is VAB). The voltage of the battery is constant, so if VAB increases, then VBC must decrease!
Why does voltage decrease when switch is closed?
This means, the charges could not flow through the circuit and complete the circuit. This is due to the gap in between the switch. So the applied energy is not converted to current even though the resistance is still there. Hence voltage will be there, where you applied it.
Does a switch have a voltage drop?
When current travels through a switch, there should be NO drop in voltage. When current travels through a load, there SHOULD be a voltage drop.
What is the voltage across the capacitor immediately after switch S1 closes?
Transcribed image text: R A circuit is wired as shown. Initially, the capacitor is uncharged and switches S1 and S2 are open. What is the voltage Vc across the capacitor immediately after switch S1 is closed?
What happens immediately after the switch is closed?
Consider a series circuit containing a resistor of resistance R and a capacitor of capacitance C connected to a source of EMF E with negligible internal resistance. The wires are also assumed to have zero resistance. Initially, the switch is open and the capacitor discharged.
What is the resistance of a series circuit?
Consider a series circuit containing a resistor of resistance R and a capacitor of capacitance C connected to a source of EMF E with negligible internal resistance. The wires are also assumed to have zero resistance.