new to the site and to electronics.
I just started learning about ohm's law and Kirchhoff's voltage law and trying to confirm values I am reading.
I have a simple circuit with a 9 V battery, 100 ohm resistor and red LED, the datasheet tells me forward voltage is 2.2 to 2.4. Checking with a multimeter the battery is 9.2 V and the resistor is 99.6 ohm.
First issue is voltage, when I measure the LED it has 2.33 V and the resistor has 5.8 V, this is 8.13 V not 9.2?
Then for current I believe we first get voltage (9.2 - 2.33 = 6.87) then 6.87/99.6 = 68.96 mA but when I measure I get 56.8 mA?
I don't understand why the numbers don't add up, can anyone help explain please?