There must be a large resistance in the test pen to limit the current passing through the human body There must be a large resistance in the electric pen to limit the current passing through the human body. The resistance of the electric pen is 880k Ω. The resistance of the neon tube and the resistance of the human body are both small. How much current is flowing through the human body

There must be a large resistance in the test pen to limit the current passing through the human body There must be a large resistance in the electric pen to limit the current passing through the human body. The resistance of the electric pen is 880k Ω. The resistance of the neon tube and the resistance of the human body are both small. How much current is flowing through the human body

I=U/R=220/880000=0.00025A=0.25ma

There is a high value resistor of 1100 kW in a measuring pen. When it is used to measure the home circuit, the neon tube will emit light. How much current will pass through the human body at this time?
The unit of current is ma

The resistance of normal people is 1000-2000 ohm. The home circuit is equivalent to a series circuit. I = u / r = 220 V / (1100 + 1) k Ω ≈ 0.2 mA

There is only test pen, resistance: 880k ohm, neon tube resistance and human body resistance are ignored. How many Ma is the current flowing through human body when using?

I = u / r = 220V / 880000 Ω = 0.00025a = 0.25ma