BPSC – Combined Competitive Examination · प्रश्न 27
Current density is:
उत्तर दाखवा आणि स्पष्टीकरण
उत्तर: (B) a vector quantity
स्पष्टीकरण
Current density J = I/A points in the direction of positive charge flow, so it is a vector.
- (A) चूक
Wrong: current is scalar, but current density has direction.
- (B) बरोबर
Correct: current density J has magnitude and direction (A/m²).
- (C) चूक
Wrong: it has units of A/m².
- (D) चूक
Wrong: it is a vector.