In the circuit shwon in fig. switch S is closed at time t = 0. Let `I_1 and I_2` be the currents at any finite time t, then the ratio `I_1// I_2` A. is constantB. increases with timeC. decreases with timeD. first increases, then decreases

In the circuit shwon in fig. switch S is closed at time t = 0. Let `I_

1.	In the circuit shwon in fig. switch S is closed at time t = 0. Let `I_1 and I_2` be the currents at any finite time t, then the ratio `I_1// I_2` A. is constantB. increases with timeC. decreases with timeD. first increases, then decreases
Answer» Correct Answer - C `I = I_(0)e^(-t//RC) or (I_(0))/(2) = I_(0)e^(-t//RC) or t = RC in 2` or `10^(-6) xx In4 =(2+r)xx0.5xx10^(-6)In 2` Solving to get `r = 2 Omega`

Discussion

No Comment Found

Related InterviewSolutions

The massses of the three wires of copper are in the ratio 1 : 3 : 5. And their lengths are in th ratio 5 : 3 : 1. the ratio of their electrical resistance isA. `1:03:05`B. `5:03:01`C. `1 : 15 : 125`D. `125 : 15 : 1`
In the circuit shown in figure find: a. the current in the `3.00 Omega` resistor,b. the unknown emfs`E_1` and `E_2` and c the resistance `R`.
A single battery is connected to three resistances as shown in fig. 5.316 A. The current through `7Omega` resistance is 4AB. The current through`3 Omega`resistance is 4A.C. The current through `6 Omega` resistance is 4A.D. The current through `7Omega` resistance is 0.
For the batteries shown in fig. `R_1, R_2 and R_3` are the internal resistance of `E_1, E_2, and E_3,` respectively Then, which of the following is / are correct? A. The equivalent internal resistance R of the system is given by `(R_1R_2R_3)//(R_1R_2 +R_2R_3+R_3R_1).`B. If `E_3 = (E_1R_2 +E_2R_1)//(R_1+R_2),` the equivalent emf of the batteries will be equal to `E_3`C. The equivalent emf to the battery is equal to `E = (E_1 +E_2 +E_3)//3`D. The equivalent emf of the battery not only depends upon values of `E_1,E_2, and E_3` but also depends upon values of `R_1, R_2 and R_3.`
In charging singe loop R - C circuit, after how many time constant, kthe potential energy in the capacitor will be 25% of its maximum value.
How many time constant will elapse before the power delivrered by the battery drops to half of its maximum value.
If 0.6 mol of electorns flows throutgh a wire in 45 min, what are (a) the total charges that passes through the wire and (b) the magnitude of the current?
The current through the `8Omega` resistor (shown in fig.) is A. 4AB. 2AC. zeroD. 2.5A
In the network shown in fig. , the potential differene across A and B is A. 6VB. zeroC. 2VD. 4V
The voltage-current variations of two metallic wire X and Y at constant temperature is shown in fig Assumign that the wires have the same length and the same diameter, explain which of the two wires will have larger resisitivity.

In the circuit shwon in fig. switch S is closed at time t = 0. Let `I_1 and I_2` be the currents at any finite time t, then the ratio `I_1// I_2` A. is constantB. increases with timeC. decreases with timeD. first increases, then decreases

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment