\x95
\x95R = V/I \xDE R = \xD0\xFC\xF3\xE1 \xF9=volt \xE8\xDD\xEB\xF9 \xED\xE1
\xEA\xFC\xF8\xF9 / \xF0\xFC\xF3\xEF \xF1\xE5\xFD\xEC\xE1 \xE8\xDD\xEB\xF9 \xED\xE1 \xF0\xE5\xF1\xDC\xF3\xE5\xE9
\x95
\x95R = 3000mV
(mill volt) / 20mA (milliamp) = 150\xD9