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Q140EasyVector Calculus

સદિશને સોલેનોઇડલ (solenoidal) કહેવાય છે જ્યારે તેનું

જવાબ અને પગલાવાર ઉકેલ
સાચો જવાબ: A. અપસરણ શૂન્ય હોય
ટૂંકી સમજૂતી

સોલેનોઇડલ સદિશ ક્ષેત્ર અપસરણ-મુક્ત હોય છે: ∇·A = 0. ભૌતિક રીતે, વિસ્તારમાં કોઈ ચોખ્ખો સ્રોત કે સિંક હોતો નથી.

વિગતવાર ઉકેલ (મૂળ ભાષામાં)

Concept & Reasoning

Divergence measures the local net outward flux density of a vector field. If divergence is zero everywhere in a region, the field is called solenoidal. Magnetic flux density B is a classic example because ∇·B=0 expresses the absence of magnetic monopoles. Curl is a different operator that measures local rotation and does not define solenoidality.

How to Solve It in the Exam

Solenoidal = divergence zero; irrotational = curl zero.

Important Exam Point

Pair the two vocabulary words with the correct vector operator.

Quick Trick

Solenoidal = divergence zero; irrotational = curl zero.

Common Mistake

Do not confuse solenoidal with curl-free; a field can be divergence-free and still have nonzero curl.

Solution diagram – સદિશને સોલેનોઇડલ (solenoidal) કહેવાય છે જ્યારે તેનું
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