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# Assignment 1(Fall 2015)

Circuit Theory (PHY301)

Marks: 30

Due Date: November 12, 2015

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).
• 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.
• This is not a group assignment, it is an individual assignment so be careful and avoid copying others’ work. If some assignment is found to be copy of some other, both will be awarded zero marks. It also suggests you to keep your assignment safe from others. No excuse will be accepted by anyone if found to be copying or letting others copy.
• 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 equivalent resistance RT of given circuit. Write each step of the calculation to get maximum marks. Draw the circuit diagram of each step otherwise you will lose marks.

Q 2:

Find the current through each resistor and power dissipation across 20kΩ Resistance. Write each step of the calculation to get maximum marks and also mention the units of each derived value.

(a)    Is it right to say that every short circuit is a close circuit while every close circuit is not short circuit. Justify your answer

(b)   What is the use of circuit breaker and Fuse in electric panel/wiring?

(c)    Write the names of different instruments/devices used to measure the voltage and current across a circuit element & way to connect them.

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