Aboutcleggsan Expertise All technical areas of Electronics Engineering.
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Broad teaching experience; work experience mostly in consumer electronics and conversion from analog to digital technologies. Pioneer in digital audio at all levels.
Question QUESTION: a resistance (70v) , an inductance (70v) & acapacitance (100v) are connected in series. What will be the equivalent volatage accross them.
ANSWER: 100 volts
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QUESTION: Can you explain ,How the answer is 100 Volt.
ANSWER: voltage total = vr + jvxl - jvxc = 70 + j70 -j100 = 70 - j30 = 76.16v at angle of -23.2 degrees.
The above is the scientific answer.
vr = voltage across resistor
jvxl = voltage across inductor
jvxc = voltage across capacitor
It is frequency dependent; I assume frequency is not changed in your example.
See this site to convert rectangular notation to polar:
but as a student you can do it on slide rule or on calculator..........
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QUESTION: Previously the answer which you have given was 100v , now the answer is 76.16v. Why it is differ.
Answer 100 is the qualitative answer for beginner student.
76 is actual voltage in complex domain because inductors and capacitors have angles associated with their impedance value due to their charging characteristics when ac voltage is applied. It must be assumed that you are using ac voltages because a capacitor would not conduct a dc current and would quickly charge up all the way and all the voltage would be across the cap; zero across the inductor and the resistor.
