advanced in phys.

[رؤى عبدالله]

A power station is connected to a factory 2.5 km away by two wires. the potential difference between the terminals of the wires at the station is 240v and that for the other terminals at the factory is 220v. = calculate the resistance of one meter of the wire and its radius ifits resitivity 1.57x10-3ohm.m and the current is 80A

you have 6 resistores of resistamces1,2,2,4,5,6 .show with drawing how to connect them to obtain atotal resistance = 1ohm

A12 v battery has an internal resistance of 0.5ohm. calculate the percent of voltage drop for this battery when connected to a 2 ohm lamp

Abattery connected with a resistor(R) so the current intensity is (I) when another resistance (0.5R) connected with the first the current inc. to double . calculate the r in terms of R