Oskar has purchased a station building to his model railroad. The lighting in the house consists of 10 light bulbs connected in series, marked 2.4V/0.1A. Unfortunately the lamps often brakes so Oskar decides to change to orange-colored LEDs.
Oskar buys 10 orange colored LEDs and 3 resistors, each with the resistance 100 Ω. The diodes must be connected in series with a current of 20 mA and voltage fall of 2.1 V over each diode, according to the manufacturer's recommendation in the included datasheet.
Help Oskar to design the circuit.