Current Electricity Charging Discharging Of Capacitors Question 686
Question: A conductor carries a current of $ 50\mu A. $ If the area of cross-section of the conductor is $ 50mm^{2} $ , then value of the current density in $ A{{m}^{-2}} $ is
Options:
A) 0.5
B) 1
C) $ {{10}^{-3}} $
D) $ {{10}^{-6}} $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Current density J= I/A $ =50\times {{16}^{-6}}/50\times {{10}^{-6}}=1A{{m}^{-2}} $
BETA
