можете помочь,почему то выходит так ,что напряжения одинаковы
Извиняюсь, неправильно прочитал, но сути не меняет. По вольтметрам ток течет, вы можете расписать общий ток в узле и найти потенциалы на концах клемм. Потом найти их разность, и у вас выйдет ответ
Certainly, let’s tackle this problem step by step.
First, recognize that since the internal resistance of the voltmeters is much higher than that of the resistors, we can assume that the current through the voltmeters is negligible. This is a common simplification in circuit analysis.
Next, let’s consider the circuit without the voltmeters. Since the resistors are all the same, you can analyze the circuit using principles of series and parallel circuits.
A useful hint to get you started: think about the symmetry in the circuit. What can you say about the potential at the points where the voltmeters are connected, compared to the total voltage ( U )? Can you use the concept of series and parallel resistors to find the voltage across each resistor, and thus across the points where the voltmeters are connected?
Remember that the voltage across resistors in series adds up to the total voltage, and the voltage across resistors in parallel is the same. How can you apply these rules to the circuit given?
