Match List-I with List-II
| List-I | List-II | ||
|---|---|---|---|
| SI Unit | Electrical Parameters | ||
| (A) | Volt | (I) | Electric Charge |
| (B) | Coulomb | (II) | Resistance/Resistivity |
| (C) | Ohm | (III) | Electric Current |
| (D) | Ampere | (IV) | Electric Potential Difference |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
(A) Volt — this matches (IV) Electric Potential Difference. One volt is the potential difference across two points when one joule of work moves one coulomb of charge between them (\(V=W/Q\)).
(B) Coulomb — this matches (I) Electric Charge. One coulomb is the charge carried by a current of one ampere in one second (\(Q=It\)), about \(6.25\times10^{18}\) electrons.
(C) Ohm — this matches (II) Resistance/Resistivity. A conductor has a resistance of one ohm when 1 V drives a current of 1 A through it (\(R=V/I\)). Strictly, the ohm is the unit of resistance; resistivity is measured in ohm metre.
(D) Ampere — this matches (III) Electric Current. The ampere is the SI base unit of current; 1 A is a flow of one coulomb of charge per second.