One of his early inventions was an improved electrical resistor for computers, radios, televisions and an assortment of other electronic devices.
Let the value of each resistor be Rn Ohms.
Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.
Siward Barn (fl. 1066 to 1087), English resistor to William the Conqueror
The Starling resistor was invented by English physiologist Ernest Starling and used in an isolated-heart preparation during work which would later lead to the "Frank–Starling law of the heart".
Since the ladder is a series circuit, the current is the same throughout, and is given by the total voltage divided by the total resistance (V/Req), which is just the sum of each series resistor in the ladder.