Use of a multimeter
①Digital multimeter: hit the measurement gear before measurement. It should be noted that the range marked on the gear is the maximum value.
②Mechanical multimeter: The method of measuring current and voltage is the same as the mathematical formula, but when measuring the negative electrode, the reading should be multiplied by the value on the gear to obtain the measured value.
For example: the current gear is "X100", the reading is 200, the measurement problem is 200X100=20000Ω=20K, the "Ω" ruler on the dial is from left to right, from large to small, while the others are from left to right ,From small to large
