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:
0.5
1
C) $ {{10}^{-3}} $
D) $ {{10}^{-6}} $
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Answer:
Correct Answer: B
Solution:
Current density J= I/A $ =50\times {{10}^{-6}}/50\times {{10}^{-6}}=1A{{m}^{-2}} $
BETA
