Assignment 1(Spring 2018)

Circuit Theory (Phy301)

Marks: 25

Due Date: May 04, 2018

DON’T MISS THESE Important instructions:


  • To solve this assignment, you should have good command over first 6 lectures.
  • Upload assignments properly through LMS, (No Assignment will be accepted through email).
  • Write your ID on the top of your solution file.
  • All students are directed to use the font and style of text as is used in this document.
  • Don’t use colorful back grounds in your solution files.
  • Use Math Type or Equation Editor etc for mathematical symbols.
  • No excuse will be accepted by anyone if found to be copying or letting others copy.
  • Don’t wait for the last date to submit your assignment.
  • You can draw circuit diagrams in “Paint” in “Corel Draw” or in “circuit maker”. The simple and easy way is to copy the given image in Paint and do the required changes in it.

Q: 1:

Find the total resistance RT in the following circuits. Where   R1= 4W,   R2= 3 W ,    R3= 5 W ,   R4=10 W , R5= 8 W ,   R6 = 12 W , R7= 15W. Draw the circuit diagram of each step otherwise you will lose your marks.

 Q: 2:

Consider the arrangement shown in fig. below.

  Find the current I through the network.

  • Calculate the power across each resistor


Q: 3:


Briefly answer the following questions:


(a) What do you understand by Conventional current and electronics current?

(b) A 12V battery is applied across two resistances of value 3Ω and 6Ω connected in series. How much is voltage drop across each resistance.

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