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AC Voltage Applied To A Resistor | AC Circuit Containing Resistance Only AC Voltage Applied To A Resistor | AC Circuit Containing Resistance Only :- Suppose an alternating current source is connected to a pure resistance R as shown in figure (a) below : Let the alternating voltage be represented by the following equation…
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Why is AC More Dangerous than DC of same voltage Why is AC More Dangerous than DC of same voltage :-In our homes, AC supply is usually 220 volts. This 220 volts is the root mean square (RMS) value of the voltage. Therefore, the peak value of the alternating voltage is, ∴ E0 =…
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RMS Value of Alternating Current | What is the rms value of alternating current ? RMS Value of Alternating Current | What is the rms value of alternating current ? :- The root mean square (r.m.s.) value of alternating current is that value of direct current which produces the same amount of heat in…
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Mean or Average Value of Alternating emf Mean or Average Value of Alternating emf :- Like alternating current, the value of alternating electromotive force (emf) is positive during the first half cycle (t = 0 to t = T/2) and equally negative during the second half cycle (t = T/2 to t = T). Therefore,…
Average Value of Alternating Current | What is the Average Value of Alternating Current Over A Complete Cycle Average Value of Alternating Current | What is the Average Value of Alternating Current Over A Complete Cycle :- As we have seen in the article on alternating current, the value of alternating current is positive…
Charging and Discharging of Capacitor Charging and Discharging of Capacitor :- Let a capacitor of capacitance C be connected in series with a resistance R to a battery of emf ε with the help of a Morse key K as shown in the figure below : (a) Charging of a capacitor (Charging and Discharging…
Phasor Diagram | What is Phasor Diagram Phasor Diagram | What is Phasor Diagram :- It is a diagram that represents alternating current and voltage of the same frequency as a vector (phasor) and shows the phase angle relationship between them. To understand a phasor diagram, it is necessary to know the following quantities…
Rise and Decay of Current In Inductive Circuit Rise and Decay of Current In Inductive Circuit :- This article explains the rise and decay of current in inductive circuit (often called the rise and decay of current in an inductive circuit) by discussing how an inductor resists sudden changes in current and how the…
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गतिक विद्युत वाहक बल गतिक विद्युत वाहक बल :- नीचे चित्र में दिखाए अनुसार, एक समान चुंबकीय क्षेत्र B में v वेग से गतिमान l लम्बाई के एक चालक पर विचार करें : तार के भीतर इलेक्ट्रॉन भी v वेग से गति करते हैं, और प्रत्येक पर एक चुंबकीय बल लगता है, जिसका परिमाण F…
लेन्ज का नियम और उर्जा संरक्षण लेन्ज का नियम और उर्जा संरक्षण :- जब कोई परिवर्तित चुंबकीय क्षेत्र किसी परिपथ में विद्युत धारा प्ररित करता है, तो यह प्ररित धारा भी अपना स्वयं का चुंबकीय क्षेत्र उत्पन्न करती है। इस प्रेरित धारा की दिशा यादृच्छिक (random) नहीं होती – यह सदैव इस प्रकार प्रवाहित…