(2)不知道是絕緣電阻還是發熱電阻。如果妳期望妳的R1是加熱電阻,R2是絕緣電阻,那麽:R1 = U/I
=U/P1/U
=U?/P1
=220?/500
=96.8Ω
公式轉換同上R2=U?/P2
=220?/10
=1840Ω
(3)W=P1*T+P2*T
=0.5kw*2h+0.01kw*6h
= 1.06千瓦/小時(度)