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There are nine fluorescent lamps, a water dispenser and a TV in the classroom. What are their connection methods?
parallel connection
1. The rated power of a household fluorescent lamp is 18W. What Ma is the current passing through when it is used? 2. When a 220v10a electric energy meter works normally, the circuit
1. The rated power of a household fluorescent lamp is 18W. What is the current passing through when it is used? 2. When a 220v10a electric energy meter works normally, what is the maximum electric power in the circuit?
How much is the resistance of the resistance wire of a pz220-40 electric lamp in normal operation?
1、I=P/U=18w/220V=0.0818A=81.8mA
2、P=UI=220V*10A=2200w
3、R=U²/P=(220V)²/40w=1210Ω
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