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> 某电路两端电压一定，己知电路中的电阻是12Ω，通过电路中的电流是2A．如果电路中的电阻增大后，通过电路中的电流减少了0.4A．则电路中的电阻增大______Ω．

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发布时间：2024-09-08

某电路两端电压一定，己知电路中的电阻是12Ω，通过电路中的电流是2A．如果电路中的电阻增大后，通过电路中的电流减少了0.4A．则电路中的电阻增大______Ω．

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