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JEE Mains · Physics · STD 12 - 4. Moving charges and magnetism

એક વિદ્યુતભાર \(Q\) એ ચુંબકીય ક્ષેત્ર \(\overrightarrow{ B }\) માં \(\overrightarrow{d l}\) જેટલું અંતર કાપે (ગતિ કરે) છે. \(\overrightarrow{ B }\) દ્વારા થતું કાર્ય શોધો :

  1. A \(1\)
  2. B અનંત
  3. C \(0\)
  4. D \(-1\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(0\)

Step-by-step Solution

Detailed explanation

Since force on a point charge by magnetic field is always perpendicular to \(\overrightarrow{ v }[\overrightarrow{ F }= q \overrightarrow{ V } \times \overrightarrow{ B }]\) \(\therefore\) Work by magnetic force on the point charge is zero.
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