Outline Joule’s equation of electrical heating and explain the terms in the equation.

Explanation:

The Joule's law of heating states that the heat evolved in a conductor is directly proportional to the product of square of current and resistance. It is given by :

I is current

R is resistance

t is time

Ohm's law, V = IR

So,

V is voltage                

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form