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Electric current is passing through a solid conductor PQ from P to Q the electric density at P and Q are in ratio

Electric current is passing through a solid conductor PQ from P to Q the electric density at P and Q are in ratio

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Grade:12

1 Answers

Riya
13 Points
one year ago
current density (J) of p= i/pi(4R)^2
Current density of q=i/pi(R)^2
Then , current density of p÷current density of q 
    Jp/Jq  = i/pi(4R)^2×pi(R)^2/i
                 = 1/4 
     Thus , the answer is 1:4

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