Basic Physics II 3B. Lecture 14.

UCI Physics 3B: Basic Physics II (Summer 2013)
Lec 14. Basic Physics II
Instructor: Roger McWilliams, Ph.D.

License: Creative Commons CC-BY-SA

Description: Second part of the Basic Physics 3 series. This course covers topics such as: fluid mechanics, thermodynamics,electrostatics (including dc circuits), magnetism (including eletromagnetic induction). The course assumes a working knowledge of calculus and trigonometry.

Recorded on August 28, 2013

[subirkumarbandyopadhyay]

For USA as supply frequency f= 60 Hz so efficiency of power supply become P= VI cos2πf=VI cos 120π= 0.95 VI so almost total supply power can utilized by USA so this advantage make USA rich country in the GLOBE

[subirkumarbandyopadhyay]

In case parallel connection the current pass through resistor are different and sum of such currents is define as line current I= I1 +I2 +I3

[subirkumarbandyopadhyay]

In case of parallel connection all resistors should have equal voltage drop.

[subirkumarbandyopadhyay]

As voltage drop is different so expected way the illumination will be different.

[subirkumarbandyopadhyay]

For low voltage supply the tungsten having red or pink clour as pink or red should have relative way large wave length and ultimately low frequency so energy E= hn expectedly low, for higher voltage the colour observed should blue of high frequency n so energy should be expected way E= hn is high