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Why does the current choose the one with small resistance
Because the resistance of the small branch of the obstruction of the current is small! Like water, where the pipe is thick, where the water flow is big!
The change of the total resistance in the circuit is (optional)
After a home circuit is installed, the total resistance will not change
B the total resistance of all electrical appliances in the home circuit is the smallest when they are started
The total resistance of C family circuit starts from large to small when the electric appliance starts from less variable
D the total resistance is 0 when all appliances in the home circuit are turned off
A. Because the total resistance of the parallel circuit R = R1 × R2 / R1 + R2, the more appliances used in the home circuit, the smaller the resistance, so B is right. C. because the total resistance of the parallel circuit R = R1 × R2 / R1 + R2, the less appliances used in the home circuit, the greater the resistance, so C
Why add 75 ohm resistance to RJ45 circuit
This resistor, called BST (Bob Simith terminal), is designed to provide 150 ohm termination between two twisted pairs to prevent the propagation of mixed cm / DM signals and help with electromagnetic radiation. However, this resistor can be removed in Gigabit RJ45 circuits, and must be added in 10 / 100 RJ45 circuits
The answer is comprehensive and accurate
What is the method of measuring resistance according to the current and voltage
It's urgent. It's quick
Voltammetry
RELATED INFORMATIONS
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