Current and voltage on each resistor:
Explanation:
In order to solve the circuit, we first have to find the equivalent resistance of the whole circuit, then the total current, and then we can proceed finding the current and the voltage for each resistor.
We start by calculating the equivalent resistance of resistors 2 and 3, which are in parallel:
This resistor is in series with resistor 4, so:
This resistor is in parallel with resistor 5, therefore:
This resistor is in series with resistor 7, so:
This resistor is in parallel with resistor 6, so:
Finally, this combination is in series with resistor 1:
We finally found the equivalent resistance of the circuit. Now we can find the total current in the circuit, which is also the current flowing through resistor 1:
And we can also find the potential difference across resistor 1:
This means that the voltage across resistor 6 is
And so, the current on resistor 6 is
The current flowing in the whole part of the circuit containing resistors 2,3,4,5,7, and therefore through resistor 7, is
And so the voltage across resistor 7 is
The voltage across resistor 5 is
And so the current is
The current through resistor 4 is
And therefore its voltage is
So, the voltage through resistor 3 is
And the current is
Finally, the current through resistor 2 is
And so its voltage is
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