Measurement of resistance, the pen to answer?
Multimeter is a red pen, the black pen is negative;When measuring resistance with a multimeter, the resistor can be connected arbitrarily because it has no polarity;
Multimeter to measure DC voltage and line parallel to one is connected to the positive and negative negative electrode; measuring DC current and line series, also is connected to the positive and negative negative answer.
Multimeter to measure the AC voltage, and parallel circuit; measuring AC current, and circuit; because no alternating current polarity, two pen also can connect to any;
