Homework Answers
After a long time, capacitor will behave like open wire,
Current in circuit I = V/[Ra + Rm]
voltage across capacitor = voltage across membrane resistor
= I*Rm
= V*Rm/[Ra + Rm]
Fourth option will be correct
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ry v= 1, m SR Again, after the switch has been closed for a long time,...
Ra S 'Cm After the switch has been closed for a long time, so that the the capacitor is completely charged, what is val...
Ra S 'Cm After the switch has been closed for a long time, so that the the capacitor is completely charged, what is value of the current flowing through the axon resistor in terms of the voltage of the battery (V,), the axon and membrane resistances, and the membrane capacitance? (Hint: again, use Kirchhoff loops. What is the current flowing through a completely charged capacitor?) Vo Rm Vo Ra+Rm OThere is no current flowing through the axon resistor. Vo Ra
a) 1/RmCm b) Cm/Rm c) RmCm d)Rm/Cm After the switch has been closed for a long...
a) 1/RmCm
b) Cm/Rm
c) RmCm
d)Rm/Cm
After the switch has been closed for a long time, so that the capacitor is completely charged, the switch then opens so that the capacitor discharges through the membrane resistor. This models "repolarization" of the axon. Here, after the potential of the inside the axon as compared to the outside becomes quite large and positive, the membrane becomes more permeable to potassium ions, which then rush from the inside of the axon (top...
Long after a switch is closed and the current becomes very small, what is the voltage...
Long after a switch is closed and the current becomes very small, what is the voltage difference across a capacitor? It depends on the capacitance of the capacitor. It depends on the resistance of the resistor. The same as the emf of the battery Roughly half the emf of the battery
The total resistance is 15.0 kohms, and the battery's emf is 24.0 V. If the time...
The total resistance is 15.0 kohms, and the battery's emf is 24.0 V. If the time constant is measured to be 25.0 µs, calculate (a) the total capacitance of the circuit and (b) the time it takes for the voltage across the capacitor to reach 16.0 V after the switch is closed.
After being closed for a long time, the switch S in the circuit shown in the...
After being closed for a long time, the switch S in the circuit shown in the figure below is thrown open at t 0. In the circuit, ε 24.0 V, RA 4.10 ko, RB 6.80 ko, and L-532 mH. RA RB (a) What is the emf across the inductor immediately after the switch is opened? 9.027522936 X Your response differs from the correct answer by more than 10%. Double check your calculations. V (b) When does the current in the...
a) How long after the switch is closed does the voltage acrossthe resistor drop to...
a) How long after the switch is closed does the voltage across
the resistor drop toVf = 7.8 V? Answer in units of s.(b) What is the charge on the capacitor at this time? Answer in
units of C.
Consider the circuit depicted in Fig. 2. The switch SW1 has been closed for a long time before it...
Consider the circuit depicted in Fig. 2. The switch SW1 has been closed for a long time before it is opened at time t = 0. The switch SW2 has been open for a long time before it is closed att = 0.1 (sec). i) Find the initial current I(0) flowing in the inductor and the initial voltage V(0) across the capacitor. ii) Find the voltage V(t) across the capacitor and the current I(t) through the inductor for 0 ≤ t ≤...
A circuit is constructed with four resistors, one capacitor, one battery and a switch as shown....
A circuit is constructed with four resistors, one capacitor, one
battery and a switch as shown. The values for the resistors are: R1
= R2 = 60 Ω, R3 = 49 Ω and R4 = 133 Ω. The capacitance is C = 75 μF
and the battery voltage is V = 24 V.
1)
The switch has been open for a long time when at time t = 0, the
switch is closed. What is I1(0), the magnitude of the...
The switch in the circuit below has been closed for a very long time. 2. a....
The switch in the circuit below has been closed for a very long
time. 2.
a. What is the voltage across the capacitor?
b. If the switch is opened, what is the time constant for
discharging the capacitor?
c. how long does it take the capacitor to discharge to 1/10th of
its initial voltage?
R1 = 1.00 Ω
R2 = 8.00 Ω
R3 = 4.00 Ω
R4 = 2.00 Ω
C = 1.00 μF
Battery = 10.0 V
R2 R4
After the switch has been closed and left closed for a very long time, what is...
After the switch has been closed and left closed for a very long
time, what is the potential drop across the 60.0-Ω resistor?
Can you please give a detailed and informative explanation for
this answer.
100.0 V 10.00 40.0 mH 30.0 60.0 15.0
Ra S 'Cm After the switch has been closed for a long time, so that the the capacitor is completely charged, what is value of the current flowing through the axon resistor in terms of the voltage of the battery (V,), the axon and membrane resistances, and the membrane capacitance? (Hint: again, use Kirchhoff loops. What is the current flowing through a completely charged capacitor?) Vo Rm Vo Ra+Rm OThere is no current flowing through the axon resistor. Vo Ra
a) 1/RmCm
b) Cm/Rm
c) RmCm
d)Rm/Cm
After the switch has been closed for a long time, so that the capacitor is completely charged, the switch then opens so that the capacitor discharges through the membrane resistor. This models "repolarization" of the axon. Here, after the potential of the inside the axon as compared to the outside becomes quite large and positive, the membrane becomes more permeable to potassium ions, which then rush from the inside of the axon (top...
After being closed for a long time, the switch S in the circuit shown in the figure below is thrown open at t 0. In the circuit, ε 24.0 V, RA 4.10 ko, RB 6.80 ko, and L-532 mH. RA RB (a) What is the emf across the inductor immediately after the switch is opened? 9.027522936 X Your response differs from the correct answer by more than 10%. Double check your calculations. V (b) When does the current in the...
a) How long after the switch is closed does the voltage across
the resistor drop toVf = 7.8 V? Answer in units of s.(b) What is the charge on the capacitor at this time? Answer in
units of C.
A circuit is constructed with four resistors, one capacitor, one
battery and a switch as shown. The values for the resistors are: R1
= R2 = 60 Ω, R3 = 49 Ω and R4 = 133 Ω. The capacitance is C = 75 μF
and the battery voltage is V = 24 V.
1)
The switch has been open for a long time when at time t = 0, the
switch is closed. What is I1(0), the magnitude of the...
The switch in the circuit below has been closed for a very long
time. 2.
a. What is the voltage across the capacitor?
b. If the switch is opened, what is the time constant for
discharging the capacitor?
c. how long does it take the capacitor to discharge to 1/10th of
its initial voltage?
R1 = 1.00 Ω
R2 = 8.00 Ω
R3 = 4.00 Ω
R4 = 2.00 Ω
C = 1.00 μF
Battery = 10.0 V
R2 R4
After the switch has been closed and left closed for a very long
time, what is the potential drop across the 60.0-Ω resistor?
Can you please give a detailed and informative explanation for
this answer.
100.0 V 10.00 40.0 mH 30.0 60.0 15.0
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