Answer:

A. Resistance is measured in units called ohms, represented by the Greek letter omega (Ω). The standard definition of one ohm is simple: It's the amount of resistance required to allow one ampere of current to flow when one volt of potential is applied to the circuit.

B.Each scale has a value of 1 ohm. Therefore 1 ohm multiplied by 10 scales is equal to 10 ohms. Adding all the value from zero, we get a total of 20 ohms. 20–30 — is divided by 5 scales.