I need to solve this circuit with Ohm's law, how do I do it? URGENT

Why do we mark tlc plates with pencil and not with pen

How is a wan different than a lan? both connect computers, but only wan users don’t need the same operating system. both are peer-to-peer networks, but only a wan requires networking hardware. both network computers, but only a wan can cover larger geographical ranges. both connect computers to the internet, but only wan connects to the cloud.

What is a typeface? a. a collection of similar text b. a collection of similar fonts c. a collection of similar designs d. a collection of similar colors e. a collection of similar images