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78,629 results
Current that keeps changing is direction is called alternating current, (AC) whereas the one that never changes its direction is ...
166,793 views
4 years ago
RMS or root mean square current/voltage of the alternating current/voltage represents the d.c. current/voltage that dissipates the ...
76,492 views
3 years ago
We're so excited to be able to share our exams with you! Cheers, Mitch.
17,131 views
When an alternating voltage is applied to a purely resistive circuit, the current can be calculated using Ohm's law. We find the ...
55,950 views
Timelapse for prereading of Phys 153 textbook, Modern Physics. Describes sections 31.1 to 31.3. For University of British ...
1,114 views
12 years ago
Phasors are rotating vectors having the length equal to the peak value of oscillations, and the angular speed equal to the angular ...
89,130 views
More videos, animations and simulations on: http://www.cg-physics.org/index.php/en/
3,159 views
When an alternating voltage is applied across a capacitor, the current leads the voltage by a phase angle of 90 degrees.
55,027 views
AC waveform analysis is not as intimidating as some may think. There is a lot going on in the AC waveform and this video walks ...
173,624 views
9 years ago
The power factor represents the fraction of the available power (also called apparent power) that is consumed (also called the true ...
58,462 views
November 2017: Describe the motion of electrons in AC current. Picture a tube of tennis balls. Direct current is when you take a ...
3,802 views
6 years ago
When an alternating voltage is applied to a purely inductive circuit, the current lags the voltage by 90 degrees. Let's calculate the ...
85,265 views
Why does current lead voltage in an AC capacitive circuit. This video is a step by step explanation as to why.
71,340 views
8 years ago
Let's explore why the alternating current in a capacitor leads the voltage across it by a quarter of a cycle. Khan Academy is a ...
35,413 views
Why do some outlets have a larger slot? Some plugs have one bigger prong, but why don't they all of them? Do you think you ...
446,135 views
Transformers step up (increase) or step down (decrease) AC voltage using the principle of electromagnetic induction - mutual ...
286,993 views
LIKE, COMMENT, SUBSCRIBE. The meter can only use to measure AC electricity. This multifunction meter can measure voltage, ...
19,640 views
Let's explore the EMF and flux equations of an AC generator and draw graphs for them. Khan Academy is a nonprofit organization ...
110,002 views
01:52 How to derive Current and Voltage Equations for AC circuits 02:03 Peak Voltage or Voltage Amplitude 04:21 Peak Current ...
679 views
Opposition offered by capacitors and inductors to alternating currents is called reactance. Reactance values depend on frequency ...
59,834 views