Assignment #: 1
Student ID: bc130402413
Student Name: Aimy
Subject: Phy301
Q. No: 1
A 30V battery is attached to a circuit containing 2 resistors and a fan having 3Ω resistance.
1) Calculate the source current Is.
Ans:
As
2) Determine the voltages V1, V2, and V3.
3) Calculate the power dissipated by each resistor.
4) Determine the power delivered by the source, and compare it to the sum of the power levels of part (4)
Q. No: 2
Find the equivalent resistances RT of given circuit. Write each step of the calculation to get maximum marks. Draw the circuit diagram of each step otherwise you will loose marks.
1st Step:
4+8=12
2nd Step:
3rd Step:
4th Step:
5th Step:
6th Step:
Q. No: 3
Answer the following short questions.
I. An energy saver, of 25 watts is connected across 220V energy source. Calculate the current flowing through it.
Ans:
II. Give two examples of closed circuit and open circuit from daily life.
Ans: Example
- closed circuit:
1. Bulb works when the circuit is complete.
2. Motor works when the circuit is complete.
- open circuit
- bulb does not work when the circuit is not complete.
- T.V. does not work until the circuit is complete.
III. Given below are some materials. Mention the conductor, semiconductor and Insulator from them.
Silicon, Silver, iron, carbon, glass, copper, rubber.
Ans:
|
Silicon |
Semi-conductor |
|
Silver |
Conductor |
|
Iron |
Conductor |
|
Carbon |
Insulator |
|
Glass |
Insulator |
|
Copper |
conductor |
|
Rubber |
Insulator |
……………………………………………
