The principle of the experiment of measuring resistance by voltammetry is as follows______ In the process of connecting the circuit, the switch must be in the______ The slide of the sliding rheostat should be at the lowest resistance______ The main purpose of this is to avoid the interference in the circuit______ &After the power is turned on, first adjust the voltage at both ends of the small bulb to zero through the sliding rheostat______ For the safety of the equipment, the measurement should start from the rated voltage step by step______ Voltage, (fill in "up" or "down") to obtain several sets of data

The principle of the experiment of measuring resistance by voltammetry is as follows______ In the process of connecting the circuit, the switch must be in the______ The slide of the sliding rheostat should be at the lowest resistance______ The main purpose of this is to avoid the interference in the circuit______ &After the power is turned on, first adjust the voltage at both ends of the small bulb to zero through the sliding rheostat______ For the safety of the equipment, the measurement should start from the rated voltage step by step______ Voltage, (fill in "up" or "down") to obtain several sets of data

The principle of volt ampere resistance measurement experiment is Ohm's law. In the process of connecting the circuit, the switch must be in the off state, and the slide of the sliding rheostat should be at the end with the largest resistance. This is mainly to avoid the current in the circuit being too large to burn the relevant components

The principle of measuring resistance by voltammetry is as follows___ The circuit diagram is as follows:___ ．

(1) The principle of measuring resistance by voltammetry is: Ohm's law, or r = UI; (2) the experimental circuit diagram of measuring resistance by voltammetry is shown in the figure; so the answer is: r = UI (or Ohm's law); the circuit diagram is shown in the figure

The principle of measuring resistance by voltammetry is as follows___ The circuit diagram is as follows:___ ．

(1) The principle of measuring resistance by voltammetry is: Ohm's law, or r = UI; (2) the experimental circuit diagram of measuring resistance by voltammetry is shown in the figure; so the answer is: r = UI (or Ohm's law); the circuit diagram is shown in the figure