The condition for the validity of Ohms law is that the a. all of the above b. the temperature should remain constant c. current should proportional to the voltage d. resistance must be wire wound type

b. the temperature should remain constant

Explanation:

Ohm's law defines that the current via conductor that arise two points would be directly proportional to the voltage via two points

It shows the relation

V = IR

where,

V = Voltage

I = Current

R = resistance

Now the validity condition occurs when the temperature would remain the same

Therefore the option b is correct

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

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