Calculate the effective resistance (in kQ) of a pocket calculator that has a 1.85 V battery and through which 0.260 mA flows. ΚΩ Additional Materials Reading Submit Answer What is the resistance (in Q2) of a 24.5 m long piece of 30 gauge copper wire having a 0.255 mm diameter? Ω Additional Materials Reading Submit Answer
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- Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.2072. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Q-m, and that of aluminum to be 2.82 x 10-8 Q.m. Number i UnitsPart A What is the equivalent resistance of group (a) of resistors shown in the figure? (Figure 1) Express your answer in ohms to two significant figures. Req= ΤΟ ΑΣΦ Submit Request Answer Part B ? Ω What is the equivalent resistance of group (b) of resistors shown in the figure? Express your answer in ohms. Η ΑΣΦ Req = Submit Request Answer Part C ? Ω What is the equivalent resistance of group (c) of resistors shown in the figure? Express your answer in ohms. Req= -Ο ΑΣΦ Submit Request Answer Provide Feedback ? Ω ConstaPart A A length of aluminum wire is connected to a precision 10.00-V power supply, and a current of 0.4192 A is precisely measured at 23.5 °C. The wire is placed in a new environment of unknown temperature where the measured current is 0.3698 A . The temperature coefficient of resistivity of aluminum is 0.00429 (°C)-1 What is the unknown temperature? Express your answer using three significant figures. να ΑΣφ ? T = °C Submit Request Answer Provide Feedback
- When you connect an unknown resistor across the terminals of a 1.50 VV AAA battery having negligible internal resistance, you measure a current of 17.0 mAmA flowing through it. Part A What is the resistance of this resistor? Part B If you now place the resistor across the terminals of a 12.6 VV car battery having no internal resistance, how much current will flow? Part C You now put the resistor across the terminals of an unknown battery of negligible internal resistance and measure a current of 0.483 AA flowing through it. What is the potential difference across the terminals of the battery?A cylindrical aluminum pipe of length 2.16 m has an inner radius of 2.03 × 103 m and an outer radius of 3.44 ×103 m. The interior of the pipe is completely filled with copper. What is the resistance of this unit? (Hint: Imagine that the pipe is connected between the terminals of a battery and decide whether the aluminum and copper parts of the pipe are in series or in parallel.) Number i UnitsIP Three resistors, R₁ = 30, R2 = 68 2, and R3 = R, are connected in parallel with a 12 V battery. Part A The total current flowing through the battery is 0.88 A. Find the value of resistance R. Express your answer using two significant figures. R= Submit Part B I1, I2, I3 = | ΑΣΦ Submit 3 Request Answer Find the current through each resistor. Enter your answers numerically separated by commas. Express your answers using two significant figures. [ΨΕΙ ΑΣΦ ? Request Answer Ω ? A
- A standard 100 W (120 V) lightbulb contains a 7.0-cm-long tungsten filament. The high- temperature resistivity of tungsten is 9.0 × 10-7 Ω m. Part A What is the diameter of the filament? Express your answer with the appropriate units. d = Submit μÅ Value Request Answer Units ****** **** ?Please need the correct answer to the given question.A circuit consists of a battery connected to three resistors (70 N, 30 N, and 170 2 ) in parallel. The total current through the resistors is 2.9 A Part A Find the emf of the battery. Express your answer using two significant figures. Πν ΑΣφ E = V Submit Request Answer Part B Find the current through 70 N resistor. Express your answer using two significant figures. ? I = A
- Part A What is the resistance of A 1.0-m-long gold wire that is 0.50 mm in diameter? Express your answer in ohms. ? R = Ω Submit Request Answer Part B A 10-cm-long piece of carbon with a 1.4 mm x 1.4 mm square cross section? Express your answer in ohms. ? R = Submit Request AnswerAn ammeter whose internal resistance is 60 2 reads 5.43 mA when connected in a circuit containing a battery and two resistors in series whose values are 500 n and 450 2. Part A What is the actual current when the ammeter is absent? Express your answer using two significant figures. I = A