The same voltage is applied across the ends of a

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Unformatted text preview: ate at which the energy is lost is the power. •  From Ohm’s Law, alternate forms of power are Electrical Energy and Power •  The SI unit of power is Wa7 (W). –  I must be in Amperes, R in ohms and ΔV in Volts •  The unit of energy used by electric companies is the kilowa'- hour. –  This is defined in terms of the unit of power and the amount of 9me it is supplied. –  1 kWh = 3.60 x 106 J A voltage V is applied across the ends of a Nichrome heater wire having a cross- sec9onal area A and length L. The same voltage is applied across the ends of a second Nichrome heater wire having a cross- sec9onal area A and length 2L. Which wire gets ho7er? 1.  The shorter wire 2....
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This document was uploaded on 01/14/2014.

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