What's the voltage?

Related to What's the voltage?: voltage divider, voltage drop, Voltage doublerTranslations
What's the voltage? EN-UKEN-GB-P0026950 EN-USEN-US-P0026950 ES-ESES-ES-P0026950 PT-PTPT-PT-P0026950 → 电压是多少？ ZH-CNZH-CN-P0026950