12 V Figure 2: 3.In figure 2. Assume the direction of the currents are correct but the polarity of the battery through which the current of 1A is flowing may or may not be correct. (a) The current I-1+2 - 3A. (True, False) (b) For the loop on the left: -(3)(2) – « + (1)(1) = 0 which leads to e= -5 indicating that the assigned polarity of the battery is incorrect. (True, False) (c) the resistance r can be found from: -(3)(2) + 12 - 3r-0 leading to r=2. (True, False)
12 V Figure 2: 3.In figure 2. Assume the direction of the currents are correct but the polarity of the battery through which the current of 1A is flowing may or may not be correct. (a) The current I-1+2 - 3A. (True, False) (b) For the loop on the left: -(3)(2) – « + (1)(1) = 0 which leads to e= -5 indicating that the assigned polarity of the battery is incorrect. (True, False) (c) the resistance r can be found from: -(3)(2) + 12 - 3r-0 leading to r=2. (True, False)
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ISBN:9781305952300
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Question
Transcribed Image Text:12 V
Figure 2:
3.In figure 2. Assume the direction of the currents are correct but the polarity of the battery through which the current of 1A is flowing may
or may not be correct.
(a) The current I-1+2 = 3A.
(True, False)
(b) For the loop on the left: -(3)(2) -e+ (1)(1) - 0 which leads to e- -5 indicating that the assigned polarity of the battery is incorrect.
(True, False)
(c) the resistance r can be found from: -(3)(2) + 12 - 3r =0 leading to r= 2.
(True, False)
(d) If (a) and (c) are true then the power dissipated by the resistor r and power supplied by the 12V battery are is 18 Watts and 36 Watts
respectively.
(True, False)
(e) If (b) is true then the power dissipated by the 1n resistor, the 20 resistor and the power supplied to the 5V battery are 1 Watt, 12 Watt
and 5 Watta respectively.
(True, False)
(F) If (d) and (e) are true the power delivered by the 12V battery is +36Watts. The power dissipated by the resistors are 41Watts and
power stored in the 5V battery is +5Watts. This indicates that energy is not conserved.
(True, False)
(g) The potential of the point b is lower than the potential of point a by 6V: V, - Va - 6.
(True, False)
![202
(A)
(B)
Figure 1:
1. Refer to figure 1.A. The capacitor is initially uncharged. The switch S is closed at t=0
(a) The time constant of the circuit is RC = (2n)(1F) = 2sec
(True, False)
(b)After a very long time (t - 0) the voltage and charge of the capacitor are 6.0V and 6.0C respectively.
(True, False)
(c) At t= ot the voltage across each 1n resistor is 3.0V.
(True, Falae)
(d)At t= ot the conduction current through the resistors and the displacement current through the capacitor are 34 and 3A respectively.
(True, False)
(e) The charge on the capacitor is given by q= 6C(1 -e-). And the current follows as I= 3Ae- 2. (True, False)
(F) The charge on the capacitor and the current through the circuit after 2 time constant are 5.19C and 0.406A respectively.
(True, False)
(g) The capacitor at t= ot behaves like a conducting wire[with zero resistance] and at t- o like an open circuit[ with infinite resistance].
(True, False)
2. Refer to figure 1.B. The capacitor is initially uncharged. The switch S is closed at t= 0.
Since the capacitor at t= 0+ behaves like a conducting wire[with zero resistance] and at t ao like an open circuit[ with infinite resistancel:
(a) The effective resistance of the circuit at t= 0+ is: 4 +
2+8
- 5.60
(True, False)
(b) After a very long time (t - 0) the effective resistance of the circuit is: 4+ 2 - 60
(True, False)
(c) At t= o+ the voltages across the 82 resistor and 20 resistor are the same.
(True, False)
(d) At t= ot the voltage across 40, 8n and 20 resistors are 4.3V , 1.7V and 1.7V respectively.
(True, False)
(e) At t - o the voltages across the 8n resistor is zero because the capacitor is fully charged and lets no current pass through it[behaves
like an open circuit].
(True, False)
(f) At t- o the current is n- 1A.
6V
(True, False)
(g) At t + oo the voltage across the 2n is 2V.
(True, False)
(h) At t- o the voltage across the 1F capacitor is 2V.
(True, False)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F430bf55b-cd13-42e4-b9bc-47cb9df7ce37%2Fd18bc365-5631-420e-9e2f-8d603e8e3d24%2Fvifqpm_processed.png&w=3840&q=75)
Transcribed Image Text:202
(A)
(B)
Figure 1:
1. Refer to figure 1.A. The capacitor is initially uncharged. The switch S is closed at t=0
(a) The time constant of the circuit is RC = (2n)(1F) = 2sec
(True, False)
(b)After a very long time (t - 0) the voltage and charge of the capacitor are 6.0V and 6.0C respectively.
(True, False)
(c) At t= ot the voltage across each 1n resistor is 3.0V.
(True, Falae)
(d)At t= ot the conduction current through the resistors and the displacement current through the capacitor are 34 and 3A respectively.
(True, False)
(e) The charge on the capacitor is given by q= 6C(1 -e-). And the current follows as I= 3Ae- 2. (True, False)
(F) The charge on the capacitor and the current through the circuit after 2 time constant are 5.19C and 0.406A respectively.
(True, False)
(g) The capacitor at t= ot behaves like a conducting wire[with zero resistance] and at t- o like an open circuit[ with infinite resistance].
(True, False)
2. Refer to figure 1.B. The capacitor is initially uncharged. The switch S is closed at t= 0.
Since the capacitor at t= 0+ behaves like a conducting wire[with zero resistance] and at t ao like an open circuit[ with infinite resistancel:
(a) The effective resistance of the circuit at t= 0+ is: 4 +
2+8
- 5.60
(True, False)
(b) After a very long time (t - 0) the effective resistance of the circuit is: 4+ 2 - 60
(True, False)
(c) At t= o+ the voltages across the 82 resistor and 20 resistor are the same.
(True, False)
(d) At t= ot the voltage across 40, 8n and 20 resistors are 4.3V , 1.7V and 1.7V respectively.
(True, False)
(e) At t - o the voltages across the 8n resistor is zero because the capacitor is fully charged and lets no current pass through it[behaves
like an open circuit].
(True, False)
(f) At t- o the current is n- 1A.
6V
(True, False)
(g) At t + oo the voltage across the 2n is 2V.
(True, False)
(h) At t- o the voltage across the 1F capacitor is 2V.
(True, False)
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