Assume that you are going to present a seminar on the topic "Hydrogen a versatile future fuel". Make a short write up to be used for your presentation.

Suppose that your teacher asks you to conduct a seminar on ozone depletion. Give any three harmful effects of ozone depletion that you would present in the seminar.

In a seminar, if you are asked to present a paper on hydrogen economy, write any two points you are going to include in your paper.

A friend from abroad presents you a coffee maker when she visited you. Unfortunately it was designed to operate at 110V line to obtain 960W power that it needs.:ASsuming the transformer you use as ideal, cal culate the primary and secondary currents.?