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Science · Physics
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You have a 1.5 mm long cylindrical resistor (made of material with p J 210 n.m), with a cross-section of radius 5 mm. a.) What is its resistance? b.) The resistor is now connected with ideal wires to an ideal 120 V battery How much current flows through this resistor? mA How much energy is dissipated to heat per second in this resistor? Also, please sketch the voltage value vs. distance travelled through the wires and resiston. You may wish to set -0 at the lowest voltage region, to avoid negative values. Mark off significant voltage values on the V axis. In the various sections ndicate whether the graph is flat, constant slope, or curv ed Let us now examine the wires as non-ideal conductors. (Recommended: solve symbolically, so small differences dont get lost in roundoff.) c.) If the copper wire we use to connect the resistor to the battery has a cross-sectional radius of 14 um and a total length of 10 cm, how much resistance is added to the circuit by the wire itself? How does this compare to the special resistor above?) d.) Now accounting for the non-ideal wires, how do your answers change from above? The current through the resistor is Select by The power dissipated by the resistor alone is --Select-- v by mW The power dissipated by the whole circuit is Select by mW

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