today I realized that the resistance between 5V pin and Gnd pin is approximately 1.6 kohm.
I am using Arduino Mega board in my project. I solder Arduino to perfboard with headers. At first, I measure resistance between 5V and Gnd pins in mega ohms. After soldering some transistors and IC sockets on perfboard, today I realized that the resistance between 5V pin and Gnd pin is approximately 1.6 kohm. I always measure without powering the board.In my project I use 15 other ICs and transistors. Their Vcc and Gnd pin will be also connected to the 5V and Gnd pins of Arduino. Therefore, it is critical for me to be sure about whether there is a problem or not because also these ICs can be damaged also.5V / 1.6kohm = 3.125 mAIs this resistance is an expected value? Or is the current flows through power pins cause a damage to the board?