The given statement is a switch has a variable resistance that is nearly zero when closed and extremely large when open, and it is placed in series with the device it controls.
The given figure is
Introduction:
Kirchhoff's second rule states that in a closed loop the sum of all the voltages is equal to zero.
Ohms law states that at constant temperature potential difference V across the terminal is directly proportional to current I flowing through the circuit
V=IR
Where R is a constant value known as resistance.
Equivalent resistance of several resistors connected in series is
Req=R1+R2+............+RN
Resistance is the property which acts as a hindrance to the current which means it opposes the flow of current. It is given that a switch has a variable resistance that is nearly zero when closed.
The given figure has zero variable resistance which leads to larger current drawn from the circuit.
It is given that a switch has an extremely large variable resistance when open. In case of extremely large variable resistance the current will be very less because the large value of resistor opposes the flow of current.
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In the circuit given below,
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A) When the switch is in position 2 at t = 1 second, the current (Ic) and voltage
(Vc) in the capacitor depend on Find the mathematical expression.
B) What is the capacitor current (Ic) and voltage (Vc) at t = 2t seconds.
C) If the switch is set to position 2 at t = 2t ', it is necessary for the time
dependent change of voltage (Vc) across the capacitor. Find the mathematical
expression.
D) Draw the time-dependent waveform of the voltage determined for the
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conditions in items A, B and C.
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ic
4 mA
+
5 kΩ
R2
R
10 μFυc
1 kN
R3
3 kΩ
When the switch just closod, the current through the circuit is:
AV
Oa zero if it is the only capacitor, but maximum if there is another capacitor in series with it.
Obzero.
Ocat its maximum value
Od equal to the current in a resistive circuit in parallel with the capacitor circuit
Oe greater than the current in a resistor that is farther from the battery than the capacitor.
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