Question

a) Define 1ohm.

b) On what factors does the resistance of a conductor depend?​

Answer 1

Answer:

HERE IS YOUR ANSWER MATE

Explanation:

A)1 ohm is equal to  one volt (V)/ one ampere (1A)

1 Ohm is defined as the resistance of a conductor with a potential difference of 1 volt applied to the ends through which 1-ampere current flows.

Ohms is the SI unit of electrical resistance.

B)The resistance of a conductor is dependent on the following factors:

Length: Resistance is directly proportional to the length of the conductor. So as the length increases the value of resistance increases.

Cross-sectional area: Resistance is inversely proportional to the cross-sectional area of the conductor. So as the cross-sectional area increases the value of resistance decreases.

Resistivity: Resistance depends upon resistivity which is a proportionality constant and depends on the nature of substance and temperature. It is inversely proportional to resistance.

Temperature: As the temperature increases, the value of resistivity increases and so resistance increases.