tsl141 - the current tsl141 – p.1/2 Resistor Problem(2 A...

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Resistor Problem (1) A heating element is made of a wire with a cross-sectional area A = 2 . 60 × 10 - 6 m 2 and a resistivity ρ = 5 . 00 × 10 - 7 Ωm . (a) If the element dissipates 5000 W when operating at a voltage V 1 = 75 . 0 V, what is its length L 1 , its resistance R 1 , and the current I 1 running through it? (b) What must be the voltage V 2 , the resistance R 2 , and the length L 2 of a heating element made of the same wire if the same power should be generated with half

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Unformatted text preview: the current? tsl141 – p.1/2 Resistor Problem (2) A 1250 W radiant heater is constructed to operate at 115 V. (a) What will be the current in the heater? (b) What is the resistance of the heating coil? (c) How much thermal energy is generated in one hour by the heater? tsl142 – p.2/2...
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This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.

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tsl141 - the current tsl141 – p.1/2 Resistor Problem(2 A...

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