Physics Hard NTS Uploaded: 17 Aug 2026

The SI unit of electrical resistance is:

Correct Answer: Option D — Ohm

Explanation:

Electrical resistance, which opposes the flow of current through a conductor, is measured in Ohms, symbolized by the Greek letter omega, nam...

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The mathematical form of Ohm's law is:

When resistors are connected in series, the total resistance:

Ohm's law relates voltage, current, and:

When resistors are connected in parallel, the total resistance:

The SI unit of electric charge is:

The SI unit of electric power is:

The SI unit of electric current is:

The formula for electric power in terms of voltage and current is:

Which of the following travels fastest in vacuum?

A device used to store electric charge is called a: