一个简单的物理题(in english)A heater used on a 250V mains circuit(电路) has a 5A fuse(保险丝) in its plug(插头).which is the hightest power rating for this heater?A 50W B 250W C 1000W D 2000W
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![一个简单的物理题(in english)A heater used on a 250V mains circuit(电路) has a 5A fuse(保险丝) in its plug(插头).which is the hightest power rating for this heater?A 50W B 250W C 1000W D 2000W](/uploads/image/z/1676474-26-4.jpg?t=%E4%B8%80%E4%B8%AA%E7%AE%80%E5%8D%95%E7%9A%84%E7%89%A9%E7%90%86%E9%A2%98%EF%BC%88in+english%29A+heater+used+on+a+250V+mains+circuit%28%E7%94%B5%E8%B7%AF%EF%BC%89+has+a+5A+fuse%EF%BC%88%E4%BF%9D%E9%99%A9%E4%B8%9D%EF%BC%89+in+its+plug%EF%BC%88%E6%8F%92%E5%A4%B4%EF%BC%89.which+is+the+hightest+power+rating+for+this+heater%3FA+50W+B+250W+C+1000W+D+2000W)
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一个简单的物理题(in english)A heater used on a 250V mains circuit(电路) has a 5A fuse(保险丝) in its plug(插头).which is the hightest power rating for this heater?A 50W B 250W C 1000W D 2000W
一个简单的物理题(in english)
A heater used on a 250V mains circuit(电路) has a 5A fuse(保险丝) in its plug(插头).
which is the hightest power rating for this heater?
A 50W B 250W C 1000W D 2000W
一个简单的物理题(in english)A heater used on a 250V mains circuit(电路) has a 5A fuse(保险丝) in its plug(插头).which is the hightest power rating for this heater?A 50W B 250W C 1000W D 2000W
P=UI=250*5=1250 W
1000W<1250W
选择:C.
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一个简单的物理题(in english)A heater used on a 250V mains circuit(电路) has a 5A fuse(保险丝) in its plug(插头).which is the hightest power rating for this heater?A 50W B 250W C 1000W D 2000W
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