Which one of the following combinations of units is equivalent to the ohm?
A)V/C
B)A/J
C)J/s
D)J×s/C²
E)W/A

Question

Quizplus · Accepted Answer

The ohm (Ω) is the unit of electrical resistance and is defined as the resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces a current of 1 ampere. This means that the ohm can be represented as volt per ampere (V/A). Looking at the given options, we can convert them to the basic units of volts (V), amperes (A), and ohms (Ω) using the definitions: 1 volt = 1 joule per coulomb (J/C), and 1 ampere = 1 coulomb per second (C/s). The only option that simplifies to V/A (or equivalently, J/C²·s), which is the definition of an ohm, is D) J×s/C².

Which One of the Following Combinations of Units Is Equivalent