An electric energy meter is installed on the home circuit. The turntable turns 180 turns in 2 hours An electric energy meter is installed on the home circuit (trunk road). The turntable of electric energy is measured to rotate 180 times within 2 hours. How many joules of electric energy are consumed by the appliance during this period? (the electric energy meter is marked with 600 revs / kW. H) Answer clearly

An electric energy meter is installed on the home circuit. The turntable turns 180 turns in 2 hours An electric energy meter is installed on the home circuit (trunk road). The turntable of electric energy is measured to rotate 180 times within 2 hours. How many joules of electric energy are consumed by the appliance during this period? (the electric energy meter is marked with 600 revs / kW. H) Answer clearly

Electric energy consumed by electrical appliances during this period:
180/600*(3.6*10^6)
=0.3*(3.6*10^6)
=1.08*10^6 J

A household electric energy meter is marked with 3000r / kW · h. now only one bulb is connected indoors, and the turntable turns 15R in 3min. Then: (1) how much energy is consumed by the bulb during this period? (2) What is the power of the light bulb?

(1) The turntable rotates for 15R in 3min, and consumes electric energy w = 153000kw · H = 1200kW · H = 1.8 × 104j. (2) the power of the bulb P = wt = 1.8 × 1043 × 60W = 100W

How to measure the power of TV with a light bulb energy meter
There is a lamp energy meter (3000r / kWh) that knows the electric power. The stopwatch measures the electric power of the TV set at home. Would you please write down the experimental process?

The bulb is connected in parallel with the TV, and connected to the watt hour meter circuit. Prepare a stopwatch. After the power is turned on, when the mark on the dial appears, start to count the time and the number of turns. When the mark on the dial turns one or more turns, record the required time and the number of turns. Calculation: the number of turns / minute * 60 / 3000 is equal to kW, minus the power of the bulb is the power of the TV, Use: 50 / 10 * 60 / 3000. Equal to 0 or 1 kW. Then subtract the bulb power from 0 or 1 kW to get the TV power

When measuring the resistance of a small bulb, how to calculate with an energy meter?

Electric energy meter, which we usually call electric meter, is used to measure electricity consumption
The meters I know are divided into three-phase meter 380V and single-phase meter 220V
The small bulb is a single-phase electrical appliance. Use a single-phase meter to measure the power consumption of the bulb in one hour. According to P = UI, the current can be calculated, and then u = IR can be used to calculate the resistance