The T-hour power consumption of an a-watt bulb is at / 1000 kwh. If the average daily power consumption is 4 hours, then two 25 watt bulbs share the same power consumption in one month (30 days) .

The T-hour power consumption of an a-watt bulb is at / 1000 kwh. If the average daily power consumption is 4 hours, then two 25 watt bulbs share the same power consumption in one month (30 days) .

0.05kw * 4 * 30 = 6 degrees

4. As shown in the figure, a and B lights are marked with the words "6 V, 6 W" and "6 V, 4 W" respectively
4. As shown in the figure, a
B. the two lamps are marked with
"6V, 6W" and
"6 V, 4 W" power supply
word. Use a transmission line
The voltage is constant at 12 volts
The power supply for the two lamps
To make these two lights work
At the same time, the light is normal, FIG
The correct circuit is ()

Two lamps are connected in series, and a 9 Ω resistor with power greater than 2W is connected in parallel on 4W bulb

An electric cooker is connected to a 220 V home circuit. When it works, the current passing through it is 4a. Please find out how long it works and can consume 1.76 * 10 electric energy

220Vx4=880W
1.76x10/880 = 2 (hours)

A rice cooker, rated power is 800W, rated voltage is 220W, cooking a meal takes 30min, how much power consumption

W=Pt=800*30*60=24000*60=1440000 J