来自樊新海的问题
当闭合电路的外电路开路时,电流I=____,端电压U=_____,外电路电阻R=_____；当外电路短时_______…….当闭合电路的外电路开路时,电流I=____,端电压U=_____,外电路电阻R=_____；当外电路短时________,电
当闭合电路的外电路开路时,电流I=____,端电压U=_____,外电路电阻R=_____；当外电路短时_______…….
当闭合电路的外电路开路时,电流I=____,端电压U=_____,外电路电阻R=_____；当外电路短时________,
电流I=_______,端电压U=_____,外电路R=_____.
1回答
2020-11-01 06:20