Physics

Physics

Problem

A ring of charge with radius

0.5

m has

0.002\pi

m gap. If the ring carries a charge of

+1

C, the electric field at the center is (1)

7.5 \times 10^7 \text{ NC}^{-1}

(2)

7.2 \times 10^7 \text{ NC}^{-1}

(3)

6.2 \times 10^7 \text{ NC}^{-1}

(4)

6.5 \times 10^7 \text{ NC}^{-1}

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