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53 Resistance CH27 Ex27 (Moe Tutoring Academy) View |
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54 Power CH27 Ex151 (Moe Tutoring Academy) View |
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51 Current CH27 Ex16 (Moe Tutoring Academy) View |
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(25-28) The filament of a lightbulb has a resistance of 12Ω at 20℃ and 140Ω when hot (as in Problem (Zhangjin Xu) View |
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