下表为一台电烤箱的铭牌,其内部简化电路如图所示,R 1 和R 2 均为电热丝。求: (1)电烤箱在高温档正常

2025-04-28 14:08:59
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回答1:

解:
(1)W=P 高温 t=1100W×15×60s=990000J;
(2)R 1 = = =44Ω,R= = =110Ω,R 2 =R-R 1 =110Ω-44Ω=66Ω
(3)P = = ≈909.1W。