
What is the resistance of a 60.1 -m-long aluminum wire that has a diameter of 8.43 mm ? The resistivity of aluminum is 2.83×10−8 Ω · m . Resistance=? An initially uncharged 33.05×10−6 F capacitor and a 8570Ω resistor are connected in series to a 1.50 V battery that has negligible internal resistance. What is the initial current ?0I0 in the circuit? ?0= Calculate the circuit's time constant ?τ . ?= s How much time ?t must elapse from the...
2. A 16.50 cm long wire has a diameter of 0.355 mm and a resistivity of 7.65 x 10-7 S2cm. (a) Calculate its resistance. (b) If a 3.85 volt battery is connected to the wire, w hat current exists in the circuit? (7 pts)
A 16.50 cm long wire has a diameter of 0.355 mm and a resistivity of 7.65 x 10^(-7) cm a. Calculate its resistance (For part a. i've seen people multiply by 4 and some not which is the correct way to solve this?) b. If a 3.85 volt battery is connected to the wire, what current exists in the circuit?
A 2.0-m length of wire is made by welding the end of a 120-cm-long silver wire to the end of an 80-cm-long copper wire. Each piece of wire is 0.60 mm in diameter. The wire is at room temperature, so the resistivities are as given in Table 25.1. A potential difference of 9.0 V is maintained between the ends of the 2.0-m composite wire.
A silver wire is 4.9 m long and 0.52 mm in diameter. what is its resistance?
A silver wire is 60 m long and os3 mm in diameter What is its resistance? Express your answer using two significant figures. R=____________________
An 80 cm long wire is made by welding a 1.8 mm diameter, 20 cm long copper wire to a 1.8 mm diameter, 60 cm long iron wire at normal room temperature (20 ∘C). When two wires are connected end to end, their resistances add together. The resistivity of copper is 1.68×10−8Ωm and the of iron is 1.00×10−7Ωm. The temperature coefficients are: copper = 0.0039/∘C and iron = 0.0050/∘C. What is the resistance of the iron section of wire?
An 80 cm long wire is made by welding a 1.8 mm diameter, 20 cm long copper wire to a 1.8 mm diameter, 60 cm long iron wire at normal room temperature (20 ∘C). When two wires are connected end to end, their resistances add together. The resistivity of copper is 1.68×10−8Ωm and the of iron is 1.00×10−7Ωm. The temperature coefficients are: copper = 0.0039/∘C and iron = 0.0050/∘C. What is the resistance of the copper section of wire?
Marvin uses a long copper wire with resistivity 1.68 x 10^(-8)Ω⋅m and diameter 1.00 x 10^(−3 )m to create a solenoid that has a 3.00 cm radius Calculate the total resistance if Marvin uses 10.8 meters of wire to create the solenoid.