Ozone is both and harmful to life on earth.

Question

Ozone is both helpful and harmful to life on Earth.

It is True that ozone is both helpful and harmful to life on Earth. On one hand, there is the ozone layer in the atmosphere that protects the Earth from direct sun rays, and thus it protects us and the life on our planet from burning up.

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c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current