College Physics
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Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A copper cable is designed to carry a current of 300. A with
a power loss of 2.00 W/m. What is the required radius of
this cable?
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- Plz complete solution otherwise leave it hangingarrow_forwardA 3.00 m length of copper wire at 20oC has a 1.20-m-long section with diameter 1.60 mm and a 1.80-m-long section with diameter 0.80 mm. There is a current of 2.5 mA in the 1.60-mm-diameter section. (a) What is the current in the 0.80-mm-diameter section? (b) What is the magnitude of E in the 1.60-mm-diameter section? (c) What is the magnitude of E in the 0.80-mm-diameter section? (d) What is the potential difference between the ends of the 3.00 m length of wire?arrow_forwardA copper transmission cable 180 kmkm long and 12.0 cmcm in diameter carries a current of 145 A. What is the potential drop across the cable?arrow_forward
- A copper wire has radius 0.800 mm and carries current I at20.0°C. A silver wire with radius 0.500 mm carries the same current andis also at 20.0°C. Let ECu be the electric field in the copper wire and EAgbe the electric field in the silver wire. What is the ratio ECu/EAg?arrow_forwardIn the circuit diagram shown in figure, R=102, L=5H, E = 20 V, i = 2 A. This current is decreasing at a rate of -1.0 A/s. Find Vab at this instant. a R ww M L ooooooo E barrow_forwardEach of the eight conductors in the figure carries 5.82 A of current into or out of the page. Two paths are indicated for the line integral (1 B.ds. What В is the value of the integral for (a) path 1 and (b) path 2? 2 (a) Number i 7.31E-6 Units (b) Number 0.000E-4 Units T-I✰arrow_forward
- A 14-gauge copper wire has a diameter of 1.508 mm. What magnitude current flows in amperes when the drift velocity is 0.500 mm/s? (The density of free electrons in copper is 8.34 x 1028 e /m³.).) Aarrow_forwardA copper transmission cable (p = 1.72 × 10¬8 Qm) 250 km long and 20 cm in diameter, caries a current of 100A. (a) What is the potential drop across the cable? (V)arrow_forwardQ.6: Given R1=15N, R2=102, R3=222 and R4=152, find the current flowing through resistance R4. R2 R1 T 8.0V Ra R3 Vo S 12.0V V = k U = k. n.n qi9 j Liki rij Ceg = YN Gi - N 1arrow_forward
- What is the power of a 1.00 X 102 MV lightning bolt having a current of 2.00 X 104 A ?arrow_forwardww Q.6: Given R1=102, R2=150, R=22Q and R=330, find the current flowing through resistance R4. ww R2 R1 8.0V R3 ww 12.0Varrow_forwardThe force per meter between the two wires of a jumper cable being used to start a stalled car is 0.025 N/m. What is the current in the wires, given they are separated by 2.00 cm? 60 A None above 50 A 15 A 30 Aarrow_forward
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