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Zener diode and 1kilo ohm resistor are in parallel combination.
Therefore voltage across zener and voltage across 1 kilo ohm resistor will be same ie 5 volt.
Apply Ohm's law for 1 kilo ohm resistor,
V = IR
Or, I = V/R = 5/1000
Or, I = 5*10^-3 = 5 mA.
Therefore voltage across zener and voltage across 1 kilo ohm resistor will be same ie 5 volt.
Apply Ohm's law for 1 kilo ohm resistor,
V = IR
Or, I = V/R = 5/1000
Or, I = 5*10^-3 = 5 mA.
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