CBSE Class 12-science Answered
a charged sheet having surface charge density 15 ^-4 cm^-2 is given. find charge on sheet if it's surface area is 1000 cm^ 2
Asked by nehasunda100 | 17 Apr, 2021, 05:31: AM
Expert Answer
Surface charge density is not properly given in text . Units of surface charge density should be charge /area.
I assume surface charge density as , 10-4 C / m2 as seen from image .
Charge = surface charge density × area = 10-4 × 1000 × 10-4 = 1000 × 10-8 C = 10 μC
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Second question
Charge = volume charge density × volume
volume charge density = 1 μC / m3
volume = (4/3)πr3 = (4/3)π × 43 × 10-6
Charge = (4/3)π × 43 × 10-6 × 10-6 = 268 × 10-12 C
Answered by Thiyagarajan K | 17 Apr, 2021, 09:48: AM
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