Question: A potential field in free space is given as V = 100 ln tan(/2) + 50 V. (a) Find the maximum value of |E

A potential field in free space is given as V = 100 ln tan(θ/2) + 50 V.

(a) Find the maximum value of |Eθ| on the surface θ = 40◦ for 0.1 < r < 0.8 m, 60◦ < ϕ < 90◦.

(b) Describe the surface V = 80 V.

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