5. (a) Can we use \( 15 \mathrm{c} / \mathrm{s} \) ac for lighting purposes? (b) \( 220 \mathrm{...

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5. (a) Can we use \( 15 \mathrm{c} / \mathrm{s} \) ac for lighting purposes? (b) \( 220 \mathrm{~V} \) ac is more dangerous than \( 220 \mathrm{Vdc} \). Why? (c) The divisions mark scale of an ac ammeter are not equally spaced. Why?
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