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I have here a voltage regulator circuit using a Zener diode.
We were tasked to find the maximum allowable \$i_L\$ given the varying voltage input so the the load voltage will remain at 8 V.
The way I understood the problem, we are asked to looked for \$I_{z(max)}\$ since past that, the Zener diode would no longer be able to maintain the voltage at 8 V. But then, I thought \$I_{z(max)}\$ is supposed to be given in a Zener diode's data sheet and also depends on the power rating of the diode (which was not given,) so I am unsure how to proceed with this problem.