Physics
GATE PH concept:vector-potentials PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:vector-potentials
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–4 of 4. Imported answers require independent review unless marked reviewed.
Question 6
Open questionPHMCQ1 markNeeds review
Consider a solenoid of length
and radius
, where
. A steady-current flows through the solenoid. The magnetic field is uniform inside the solenoid and zero outside. 
Among the given options, choose the one that best represents the variation in the magnitude of the vector potential,
at
, as a function of the radial distance
in cylindrical coordinates.Useful information: The curl of a vector
, in cylindrical coordinates isYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 40
Open questionPHMCQ2 marksNeeds review
The vector potential inside a long solenoid, with
turns per unit length and carrying current
, written in cylindrical coordinates is
. If the term
, where
is added to
, the magnetic field remains the same ifYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 8
Open questionPHMCQ1 markNeeds review
Among electric field (
), magnetic field (
), angular momentum (
), and vector potential (
), which is/are odd under parity (space inversion) operation?Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 30
Open questionPHMCQ2 marksNeeds review
A constant and uniform magnetic field
pervades all space. Which one of the following is the correct choice for the vector potential in Coulomb gauge?Your answerChoose one option.
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