10.a. To provide a useful purpose, electrical energy is most often converted to A. heat, chemical energy, or mechanical energy. B. heat, light, or mechanical energy. C. light, chemical energy, or mechanical energy. D. heat, light, or chemical energy. 10.b. You wish to switch two hot wires so that the power is either off or provided to either one of two loads. To do this, you should use a(n) _______ switch. A. DPDT B. DPTT C. SPDT D. DPST

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