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. : "Current Electricity"

Current Electricity: Superposition Method

Using superposition, find the voltage Vacross the resistor R2.

Solution:

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DC Circuit With Capacitor and Inductor

Q- The circuit has reached the steady state DC condition.

(a) Find the current through the voltage source

(b) Find the energy stored in the capacitor.

(c) find the energy stored in the inductor.

Solution:

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Ohm's Law: DC Circuits

Q- In the circuit given bellow (using Ohm’s Law) find 

(a) The potential difference across R1                                                              

(b) The current in R2

(c) The power dissipated in R3

Solution:

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Kirchhoff's Law

Q- Two ideal constant voltage sources and six resistors are connected in a circuit as shown. The right most resistor is the load. Using mesh analysis calculate mesh currents I1, I2 and I3.

Solution:

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Current Electricity: Superposition Method

Q- Consider the circuit in figure below with two ideal voltage sources. Calculate the current I in the 1 kΩ resister using the superposition theorem.

Solution:

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Current Electricity

Q- For the network shown in Figure

(a) Find the current I1

(b) Calculate the power dissipated by the 4 Ω resistor

(c) Find the current I2

Solution:

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Current Electricity: Kirchhoff's Law

Q- Using mesh analysis, determine the current through R= 5Ω resistance and the potential Va.

Solution:

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Current Electricity: DC Circuits


Q- For the network of Figure,

(a) determine the value of R for maximum power to R.

(b) Determine the maximum power to R.

Solution:

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Kirchoff's Law: Mesh Analysis

Q- Using mesh analysis determine the current through 5Ώ resistor and voltage V in the given network.

Solution:

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Kirchhoff's Law

Q- Find the mesh currents and voltage Vab for given network.

Solution:

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Kirchhoff's Law: Nodal Analysis

Q- Find current through all resistances in the given network.

Solution:

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Ohm's Law

Q- Find current through all resistances in the given network.

Solution:

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Resistance

(On request - Harsh)

Q- Find equivalent resistance between A and B.

Solution:

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Current Electricity

Q- In the circuit bellow

(a) Find the equivalent resistance of the circuit.

(b) Find the currents I1 and I2.

Solution:

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Current Electricity

Q1- A light-bulb designed to operate in a 120.0 V circuit has a resistance of 192 ohms. At what rate does the bulb use electric energy? 

Q2- What is the monthly energy cost of leaving a 60 W bulb on continuously if electricity costs Rs 3.0 per kWh?

Solution:

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Current electricity: Resistance and Capacitor

Q- Consider the circuit bellow remains connected for long time.

(a) Calculate the voltage across the capacitor.  

(b) Calculate the current through the resistances.

(c) Calculate the charge on the capacitor.

Solution:

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Charging of a capacitor

Q- A capacitor in an RC circuit is charged to 60.0% of its maximum value in 0.900 s. What is the time constant of the circuit?

Solution:

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Current electricity: Resistance, Drift speed

Q- A solid cube of silver (density = 10.5 g/ cm3) has a mass of 90.0 g.

(a) What is the resistance between opposite faces of the cube?

(b) Assuming each silver atom contributes one conduction electron, find the average drift speed of electrons when a potential difference of 1.00*1O-5V is applied t…

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Potential Divider

Q- A 20V battery has an internal resistance r = 2 ohms. Design a voltage divider supplying 5V (Open circuit) from the end-points of resistor R2 = 10 ohms. Find the load current when RL = 15 ohms is connected to the R2 of the divider and the voltage under load.

Solution:

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Resistance -series and parallel

Q- Two resistors connected in series have an equivalent resistance of 690 W. When they are connected in parallel, their equivalent resistance is 150 W. Find the resistance of each resistor.

Solution:

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