BPSC – Combined Competitive Examination · ಪ್ರಶ್ನೆ 27
Current density is:
ಉತ್ತರ ತೋರಿಸು ಮತ್ತು ವಿವರಣೆ
ಉತ್ತರ: (B) a vector quantity
ವಿವರಣೆ
Current density J = I/A points in the direction of positive charge flow, so it is a vector.
- (A) ತಪ್ಪು
Wrong: current is scalar, but current density has direction.
- (B) ಸರಿ
Correct: current density J has magnitude and direction (A/m²).
- (C) ತಪ್ಪು
Wrong: it has units of A/m².
- (D) ತಪ್ಪು
Wrong: it is a vector.