Refer to the passage below and then answer the question afterwards in the same language as the passage: Passage: With electrical transmission pursuant to EIA-485, twisted pair cables with impedances of 150 ohms are used in a bus topology. Bit rates from 9.6 kbit/s to 12 Mbit/s can be used. The cable length between two repeaters is limited from 100 to 1200 m, depending on the bit rate used. This transmission method is primarily used with PROFIBUS DP. Question: In a bus topology, how much impedance (in ohms) do twisted pair cables have?
150 ohms