In the given circuit, with steady current, calculate the potential drop across the capacitor in terms of V.
CBSE FOREIGN - SET 2 2017
Download our app for free and get started
In steady state branch BE is eliminated $ \text{I}=\frac{10{\text{V}}-5\text{V}}{(3+2){\Omega}}\text{A}$
$=\text{1A}$
For loop EBCDE
$-v_c{-5+10-3\times1}=0$
$-{\text{V}}_c+10-8=0$
$\therefore{\text{V}_c}=2\text{ }\text{volt}$
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1Using Kirchhoff’s rules, calculate the current through the $40\Omega$ and $20\Omega$ resistors in the following circuit:View Solution
- 2View SolutionIs the motion of a charge across junction momentum conserving? Why or why not?
- 3Given $n$ resistors each of resistance $$R, how will you combine them to get the $(i)$ maximum $(ii)$ minimum effective resistance? What is the ratio of the maximum to minimum resistance?View Solution
- 4(a) In Example 3.1, the electron drift speed is estimated to be only a few $mm s ^{-1}$ for currents in the range of a few amperes? How then is current established almost the instant a circuit is closed?View Solution
(b) The electron drift arises due to the force experienced by electrons in the electric field inside the conductor. But force should cause acceleration. Why then do the electrons acquire a steady average drift speed?
(c) If the electron drift speed is so small, and the electron's charge is small, how can we still obtain large amounts of current in a conductor?
(d) When electrons drift in a metal from lower to higher potential, does it mean that all the 'free' electrons of the metal are moving in the same direction?
(e) Are the paths of electrons straight lines between successive collisions (with the positive ions of the metal) in the (i) absence of electric field, (ii) presence of electric field? - 5A battery of emf 10 V and internal resistance $3\ \Omega$ is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?View Solution
- 6Calculate the value of the resistance $R$ in the circuit shown in the figure so that the current in the circuit is $0.2A$. What would be the potential difference between points Band $E?$View Solution
- 7View SolutionA voltage of 30V is applied across a carbon resistor with first, second and third rings of blue, black and yellow colours respectively. Calculate the value of current in mA, through the resistor.
- 8What are the advantages of the null$-$point method in a Wheatstone bridge? What additional measurements would be required to calculate $R_{unknown}$ by any other method?View Solution
- 9View SolutionState Kirchhoff's rules of current distribution in an electrical network. Using these rules determine the value of the current I1 in the electric circuit given below.
- 10The current through a wire depends on time as $\text{i}=\text{i}_0+\alpha\text{t},$View Solution
Where $\text{i}_0=10\text{A}$ and $\alpha=4\text{A/ s}.$ Find the charge that crosses through a section of the wire in 10 seconds.