Physics
2018 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE PH 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 40–42 of 65. Imported answers require review unless explicitly marked reviewed.
Question 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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Open questionPHMCQ2 marksNeeds review
If
is the Hamiltonian for a free particle with mass
, the commutator
isYour answerChoose one option.
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Open questionPHMCQ2 marksNeeds review
A long straight wire, having radius
and resistance per unit length
, carries a current
. The magnitude and direction of the Poynting vector on the surface of the wire isYour answerChoose one option.
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