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The relaxation time τ is nearly independent of applied E field whereas it changes significantly with temperature T. First fact is (in part) responsible for Ohms law whereas the second fact leads to variation of ρ with temperature. Elaborate why?
19
Sep
The relaxation time τ is nearly independent of applied E field whereas it changes significantly with temperature T. First fact is (in part) responsible for Ohms law whereas the second fact leads to variation of ρ with temperature. Elaborate why? and the charged capacitor is connected to the uncharged capacitor C2 by closing S2. C2 [...]
Is the motion of a charge across juction momentum conserving ? why or why not?
19
Sep
Is the motion of a charge across juction momentum conserving ? why or why not? Is the motion of a charge across juction momentum conserving ? why or why not? September 19, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Two capacitors of equal capacitance ( C1 = C2 ) are as shown in the figure. Initially, while the swithc is open (as shown) one of the capacitors is uncharged and the other carries charge Q0. The energy stored in the charged capacitor is U0. Sometime after the switch is closed, the capacitors C1 and C2 carry charged Q1 and Q2 respectively, the energy stored in the capacitors are U1 and U2 respectively. Which of the following expression is correct?
19
Sep
Two capacitors of equal capacitance ( C1 = C2 ) are as shown in the figure. Initially, while the swithc is open (as shown) one of the capacitors is uncharged and the other carries charge Q0. The energy stored in the charged capacitor is U0. Sometime after the switch is closed, the capacitors C1 and [...]
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the capacitors C1 and C2 carry charged Q1 and Q2 respectively ,
the energy stored in the capacitors are U1 and U2 respectively. Which of the following expression is correct? ,
Two capacitors of equal capacitance ( C1 = C2 ) are as shown in the figure. Initially ,
while the swithc is open (as shown) one of the capacitors is uncharged and the other carries charge Q0. The energy stored in the charged capacitor is U0. Sometime after the switch is closed ,
Two capacitors c1 and c2 are charged to the same potential V, but with opposite polarity as shown in the figure. The switch s1 and s2 are then closed.
19
Sep
Two capacitors c1 and c2 are charged to the same potential V, but with opposite polarity as shown in the figure. The switch s1 and s2 are then closed. but with opposite polarity as shown in the figure. The switch s1 and s2 are then closed. Two capacitors c1 and c2 are charged to the [...]
In the circuit shown in figure initially key K 1 is closed and keys K 2 is open. Then K 1 is opened and K 2 is closed (order is important). [Take Q 1 ′and Q 2 ′ as charges on C 1 and C 2 and V 1 and V 2 as voltage respectively. Then ]
19
Sep
In the circuit shown in figure initially key K 1 is closed and keys K 2 is open. Then K 1 is opened and K 2 is closed (order is important). [Take Q 1 ′and Q 2 ′ as charges on C 1 and C 2 and V 1 and V 2 as [...]
Consider the circuit shown where C1= 6 μF, C2 = 3 μF and V = 20 V. Capacitor C1 is first charged by closing the switch S1. Switch S1 is then opened, and the charged capacitor is connected to the uncharged capacitor C2 by closing S2.
19
Sep
Consider the circuit shown where C1= 6 μF, C2 = 3 μF and V = 20 V. Capacitor C1 is first charged by closing the switch S1. Switch S1 is then opened, and the charged capacitor is connected to the uncharged capacitor C2 by closing S2. and the charged capacitor is connected to the uncharged [...]
Two identical capacitors, have the same capacitance C. One of them is charged to potential V1 and the other V2. The negative ends of the capacitors are connected together. When the poistive ends are also connected, the decrease in energy of the combined system is
19
Sep
Two identical capacitors, have the same capacitance C. One of them is charged to potential V1 and the other V2. The negative ends of the capacitors are connected together. When the poistive ends are also connected, the decrease in energy of the combined system is have the same capacitance C. One of them is charged [...]
In the figure, initial status of capacitance and their connection is shown. Which of the following is incorrect about this circuit ?
19
Sep
In the figure, initial status of capacitance and their connection is shown. Which of the following is incorrect about this circuit ? In the figure initial status of capacitance and their connection is shown. Which of the following is incorrect about this circuit ? September 19, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
Two condensers c1 and c2 in a circuit are joined as shown in the figure. The potential of point A is V1 and that of B is V2 . The potential of point D will be
19
Sep
Two condensers c1 and c2 in a circuit are joined as shown in the figure. The potential of point A is V1 and that of B is V2 . The potential of point D will be Two condensers c1 and c2 in a circuit are joined as shown in the figure. The potential of point [...]
A 10 muF capacitor and 20 muF capacitor are connected in series across a 200 V supply line. The charged capacitors are then disconnected from the line and reconnected with their positive plates together and negative plates together and no external voltage is applied. what is the potential difference across each capacitor?
19
Sep
A 10 muF capacitor and 20 muF capacitor are connected in series across a 200 V supply line. The charged capacitors are then disconnected from the line and reconnected with their positive plates together and negative plates together and no external voltage is applied. what is the potential difference across each capacitor? Three capacitors each [...]