From the instant the voltage is applied, the rate of change of the voltage is high, and if it was to continue in a linear manner, then V C would reach its maximum value in a time equal to one time constant (T), where T (in seconds) is equal to C (in Farads) multiplied by R (in ohms), see fig 4.3.1. above.
4. Make your reception even bigger with a repeater or a wireless bridge. If your office is inconveniently far from your wireless access point, and you find yourself stretching to the edge of the room to get better reception, install a wireless signal repeater.
Also, as Wi-Fi router is placed higher, like in a multi-story building, the Wi-Fi signal range increases to as much as 150 meters (492 ft.). However, as you move away from the source, the signal gets weaker. Also, obstacles may cause a Wi-Fi signal to weaken as well. Everything blocks Wi-Fi signals a little. Wood, plaster, cinder blocks, and glass don't interfere much, but brick, stone, and water (like a giant fish tank) can block a Wi-Fi signal more. The materials that really block Wi-Fi signals are ceramic, concrete, metal, and mirrors, which reflect visible light and radio waves alike (Wi-Fi Versus Your Walls. This means that since steel is a metal, it blocked Wi-Fi more than the duro rock.