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When two resistors are connected in parallel, please tell us the distribution law of their current and electric power
Electric power refers to the physical quantity of the speed of current work, and the calculation formula is: P = UI
P\x0f=P\x0f+P\x0f+.+P\x0f
Specifically, in the series circuit, there are:
P\x0f=P\x0f+P\x0f+.+P\x0f
=U\x0fI\x0f+U\x0fI\x0f+.+U\x0fI\x0f
=(U\x0f+U\x0f+.+U\x0f)I
=I\x0f(R\x0f+R\x0f+.+R\x0f)
Because the current through the electrical appliances in the series circuit is equal, the distribution of electrical power in the series circuit is proportional to the resistance of the electrical appliances, that is, the greater the resistance, the more electrical power consumed by the electrical appliances
In the parallel circuit, there are:
P\x0f=P\x0f+P\x0f+.+P\x0f
=U\x0fI\x0f+U\x0fI\x0f+.+U\x0fI\x0f
=(I\x0f+I\x0f+.+I\x0f)U
=(\x0f+\x0f+.+\x0f)U\x0f
Because the voltage at both ends of each branch in the parallel circuit is equal, the distribution of electric power in the parallel circuit is inversely proportional to the resistance of each user, that is, the higher the resistance, the less the electric power consumed (or the electric power allocated) by the user
Calculation method of three phase electric current
When calculating three-phase electricity, we should first pay attention to whether the circuit adopts star connection or triangle connection, and the phase relationship between the voltage and current of each phase. Then we can calculate the size and phase of the voltage and current according to the impedance
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