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.
The wireless signals in your home, you'll be glad to hear, are a form of non-ionising radiation-Radio Waves. The Radio Waves emanating from your Wireless router and Wireless adaptor are about 15 to 20 times lower than that from a mobile phone. However, the SAR values for phones were derived from short bursts to the head. Wireless signals are constant, so it is difficult to compare the two.