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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 5 April 2024, Shift 2, Physics Q43

Question 43 of 90 in this shift, Physics question 13 of 30, Section A.

The electrostatic force (F1⃗)\left(\vec{F_1}\right) and magnetic force (F2⃗)\left(\vec{F_2}\right) acting on a charge q moving with velocity vv can be written :
  1. (1)F1⃗=qE⃗, F2⃗=q(B⃗×V⃗)\vec{F_1}=q\vec{E},\ \vec{F_2}=q(\vec{B}\times\vec{V})
  2. (2)F1⃗=qE⃗, F2⃗=q(V⃗×B⃗)\vec{F_1}=q\vec{E},\ \vec{F_2}=q(\vec{V}\times\vec{B})Official answer
  3. (3)F1⃗=qB⃗, F2⃗=q(B⃗×V⃗)\vec{F_1}=q\vec{B},\ \vec{F_2}=q(\vec{B}\times\vec{V})
  4. (4)F1⃗=qV⃗⋅E⃗, F2⃗=q(B⃗⋅V⃗)\vec{F_1}=q\vec{V}\cdot\vec{E},\ \vec{F_2}=q(\vec{B}\cdot\vec{V})

Official answer

Option 2

NTA final key.