and in the earthâs interior, which part is the densest? explain please. THANKS!!!
Answer: All of our CB antennas have roughly 50 Ohm impedance to match the output of the CB radio. The impedance is not critical as 25 Ohms to 100 Ohms is acceptable; however, the best signal transfer occurs at 50 Ohms, so every design is optimized very close to 50 Ohms.
A residual-current device (RCD), or residual-current circuit breaker (RCCB), is a device to quickly disconnect current to prevent serious harm from an ongoing electric shock.Injury may still occur in some cases, for example if a person falls after receiving a shock.n earth leakage circuit breaker (ELCB) may be a residual-current device, although an older type of voltage-operated earth leakage circuit breaker also exists. In German speaking countries the device is sometimes known as FI where the F stands for fault (Fehler) and I for the symbol that represents Electric current.