A fuse with a rated current of 5A is installed on the circuit of? 220 V electric lamp. In this circuit, a fuse with a rated current of 40 W can be installed at most

A fuse with a rated current of 5A is installed on the circuit of? 220 V electric lamp. In this circuit, a fuse with a rated current of 40 W can be installed at most

The voltage is 220V, the maximum current is 5a, so the maximum power is 220 * 5 = 1100W, so 1100 / 40 = 27.5
So it can hold 27 at most

The fuse box of a household is equipped with a fuse with a rated current of 5A, so how many 220 V and 40 W lamps can be installed in the household circuit at the most at the same time, so that they can light normally

I=P/U=40W/220V=2/11 A
5A/ 2/11 A=27.5
n=27

A fuse with rated current of 5A is installed on the circuit of 220 v. how many lamps can be installed in this circuit at most

The current of 220v40w bulb is
P=UI
I=P/U=40/220=2/11A
Maximum 5A
5 / (2 / 11) = 27.5 = 27 lamps