Problems in the chapter of home circuit in Physics There is a voltage of 220 V between the live line and the zero line, not between the zero line and the ground, and not between the ground and the ground. Why? It is said in the book that the zero line is connected to the ground, and then the ground is grounded. I don't quite understand. Who can explain this voltage. But isn't the home circuit AC? Can't the current pass through the zero line? At this time, it has no voltage? And, Is it OK to touch the zero line when you get an electric shock? Does the zero line also have current? It's better to have a circuit diagram to explain If the zero line forms a loop with the live line, why does it have no voltage and current

Problems in the chapter of home circuit in Physics There is a voltage of 220 V between the live line and the zero line, not between the zero line and the ground, and not between the ground and the ground. Why? It is said in the book that the zero line is connected to the ground, and then the ground is grounded. I don't quite understand. Who can explain this voltage. But isn't the home circuit AC? Can't the current pass through the zero line? At this time, it has no voltage? And, Is it OK to touch the zero line when you get an electric shock? Does the zero line also have current? It's better to have a circuit diagram to explain If the zero line forms a loop with the live line, why does it have no voltage and current

The zero line has no current. In fact, the live line and the zero line are the same wire, but the zero line passes through the electrical appliances and the live line is the power supply line. You can understand it like this: electricity is water, and water flows inside. We know that the switch is connected to the live line. When the switch is disconnected, the water flow to the switch is blocked, and it can't flow. Before the switch is stopped, the water flows along the zero line, It's not so much that there is no electricity in the zero line as that the electricity is led away, so there is no electricity in the zero line

The voltage of lighting circuit in our country is______ 5. What is the difference between household appliances______ (fill in "parallel connection" or "series connection") and the electricity consumed by the household is______ It's measured with a watch

In our country, the voltage of lighting circuit is 220 V; household appliances are connected in parallel, so that the voltage of 220 V can be obtained, and can be used without mutual influence; the energy consumed by the family is measured by the energy meter. So the answer is: 220, parallel, energy meter

Students found that the household circuit often uses a 10 a watt hour meter, then the total power of household appliances used by the household with this kind of watt hour meter at the same time
It should be a not more than 200W B not more than 1200W C not more than 2.2kW

C P=uI
Voltage 220V times current 10A = 2200W

When a household appliance is connected to a home circuit, the current is 2a, and the work done by the current is J. the electric energy consumed is j, in kW. H

The work done by the current is 440j and the power consumed is 0.44kw. H