(b) A disk of radius R (Figure 2) has a non-uniform surface charge density = Cr, where C is a constant and ris measured from the center of the disk. Find the potential at P. R 1 & μα = c² x (10-7 H-m¯¹) ke Απερ 4T = 8.987 551 787 368 1764 x 10° N-m².C-². -SE. E = k₁/2 ↑ ke ΦΕ =&dq=pdV Р dq = σ dA σ A λ =&dq= - dq = λ de = F₁ =qE F12 = ke 9 V = ke / / T V = U/qo 9192 U = ke 112 9192 ‹H E. dA = qin €0 P

A: Special theory of relativity

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