A 400-W, 4-Ω public address speaker is to be fused for overload protection. What maximum current rating of a fuse should be used?
Added by Robert M.
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We are given that P = 400 W and R = 4 Ω. Show more…
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In a certain stereo system, each speaker has a resistance of 4.00$\Omega .$ The system is rated at 60.0 $\mathrm{W}$ in each channel. Each speaker circuit includes a fuse rated at a maximum current of 4.00 $\mathrm{A}$ . Is this system adequately protected against overload?
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