<span>Ohm's law deals with the relation between
voltage and current in an ideal conductor. It states that: Potential difference
across a conductor is proportional to the current that pass through it. It is
expressed as V=IR. Therefore, the correct answer would be option 1. The current will increase as well since there is an increase in the voltage.</span>
The answer is C. solid iron and nickel
Khan Academy is great! Also, Alison (it's a website) has some free courses as well.