Question

U=100 в r=30 ом x=40 ом

Answer 1

Z² = R² + X²

Z = √(R² + X²)

I = U/Z = U/√(R² + X²)

I = 100 В : √(30² + 40²)Ом² = 100 В : 50 Ом = 2 А

Ответ: общее сопротивление цепи Z = 50 Ом, сила тока в цепи I = 2 А

Answer 2

It looks like you've provided the values for a circuit in which the voltage (U) is 100 volts, the resistance (r) is 30 ohms, and the reactance (x) is 40 ohms. However, it's not clear what exactly you'd like to know or calculate based on these values. Please provide more context or specify the information you are seeking, and I'll be happy to assist you further.