Which answer is correct?
Which answer is correct and why?
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When we start from the word voltage source, we assume that the voltage is defined. So I don’t think there’s 1. If the voltage source is a battery, the voltage could easily decrease when the load is too low. If the question arises, does the burden increase?
Your consumers are essentially resistors. If two of them are switched instead of one in series, the total resistance increases (Rges = R1 + R2…) more consumers means more resistance. it is clear that the current strength does not remain constant. she takes off. The voltage is known to be the pressure which presses the current against the resistor through the line. So 3 is out and 1 is defined.
That’s why four of them would be out. because, as already said, when the power decreases, it cannot increase, and 5 is of course also out because less power flows.
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Answer 2.
Why?
Because U=R*I
Since U (the voltage) is constant. A 9V battery will continue to output 9V even if you connect a second bulb.
R (resistance – consumers) is increasing because the current has to flow through two consumers.
This causes the I (the current flow becomes smaller)
Overall, I recommend this page about the electrical engineering principles:
https://www.elektronik-kompendium.de/sites/slt/0110191.htm
Thanks for the answer! I was between the 2 and 3rd because: is it not that the current in the circuit with series-connected resistors remains constant?
No, only the voltage across the entire series remains constant. As in the example the 9V from the battery.
The flow of electricity through the individual consumer remains only constant when a further consumer parallel is connected to it.
The constant current flow affects the same current flow through all consumers. See above link