(20 14? Fuxin) as shown in the figure is the structural schematic diagram of the electronic scale. The dial of an electronic scale is a _ _ _ _ _ table, and the greater its indication, the more object

(20 14? Fuxin) as shown in the figure is the structural schematic diagram of the electronic scale. The dial of an electronic scale is a _ _ _ _ _ table, and the greater its indication, the more objects there are. The scales of electronic scales are connected in series in the circuit, and the scales of electronic scales should be ammeters. When the mass of the object put into the board is large, the resistance of the access circuit is small, while the resistance of the access circuit is small and the current is large when the power supply voltage is constant. From W=UIt, the circuit consumes more power.

P and metal sheet AB form a sliding rheostat. When the switch S is closed and there is no object in it, the slider is at the A end, the scale of the electronic scale indicates that the circuit is open, and the A end is an insulator.

So the answer is: currently; Big; More; insulator