TestUstad

The magnetic force between two wires which are having current in opposite direction will:

Correct answer: B. Repel each other

  • A. Attract each other
  • B. Repel each other
  • C. Experience no force between them
  • D. None of these options are correct

Explanation

The magnetic force per unit length between two parallel wires is given by; F/ l = (μo/ 2π) (I1I2 / d)If the conductor carries the current in the same direction, then the force between them will be attractive.If the conductor carries the current in the opposite direction, then the force between them will be repulsive.Hence, B is the correct answer.

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 Electromagnetism

Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.

Practise Electromagnetism

1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Electromagnetism testAll Electromagnetism 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 Electromagnetism questions

Which of the following losses in a transformer is zero even at full load?

If the direction of "current" is upward pointed by the "thumb" and the "magnetic field" is north side, then the force will be?

1 Tesla is equal to:

For an efficient step down transformer:

A transformer is used to light 100 W 25 volt lamp from 250 Volt ac mains. The current in the main cable is 0.5 A. Calculate the efficiency of the transformer

Which of the following is the unit of mutual inductance?