TestUstad

Ohm's law establishes a relation between:

Correct answer: A. Current and voltage

  • A. Current and voltage
  • B. Resistance and voltage
  • C. Charge and voltage
  • D. Current and resistance

Explanation

Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across its ends, provided the temperature and other physical conditions remain unchanged. This fundamental relationship is V = IR.

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Current Electricity

Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.

Practise Current Electricity

1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Current Electricity testAll Current Electricity MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Physics questions like this

Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Physics Test Physics80 MCQsSubject Specialist Physics Test Physics80 MCQsNET Physics60 MCQsNUMS Physics40 MCQsDUHS Physics36 MCQsETEA MDCAT Physics36 MCQsKMU Physics36 MCQsMDCAT Physics36 MCQsECAT Physics30 MCQsETEA Engineering Admission Test Physics30 MCQsGIKI Physics30 MCQsNED Physics30 MCQsPIEAS Physics30 MCQsPMD Physics25 MCQsBSN Entry Test Physics20 MCQsPAF Airman Physics15 MCQs

More Current Electricity questions

A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volts are to be used from a household supply. The rating of fuse to be used is:

A current of 3 A passes through an electric circuit for 5 minutes and does a work of 900J. What is the emf of the source?

An engine uses 30 A of current. The resistance offered is 15 ohms. Calculate the power consumed by the engine in horsepower.

For an ohmic conductor, doubling the voltage without changing the resistance will cause the current to:

Which equation is used to define resistance?

The following four wires are made of the same material and are at the same temperature. Which one of them has highest electrical resistance?