Part A A 55.0-cm-long hollow nichrome tube of inner diameter 2.8 mm, outer diameter 3.0 mm is connected to a 3.0 V battery. What is the current in the tube? Express your answer with the appropriate units. I = Value A
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- A current of 0.89 A flows through a copper wire 0.78 mm in diameter when it is connected to a potential difference of 15 V. Part A How long is the wire? Express your answer using two significant figures. VD] ΑΣΦ L = Submit Request Answer Sw ?A 90 M2 resistor has a current of 0.68 A and is connected in series with a 110 resistor. Part A What is the emf of the battery to which the resistors are connected? Express your answer using two significant figures. IVE ΑΣΦ ε = ? kVIP 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
- Part A A 3.4-mm-diameter wire carries a 18 A current when the electric field is 6.5×10-2 V/m What is the wire's resistivity? You may want to review (Pages 753 - 754). Express your answer in ohm-meters to two significant figures. να ΑΣφη ? N. m Submit Request AnswerA material is formed into a long rod with a square cross-section 0.50 cm on each side. When a 112 VV voltage is applied across a 20-mm length of the rod, a 4.0 AA current is carried. Part A What is the resistivity of the material? Express your answer using two significant figures.Two 9.0-cm-diameter metal plates 1.2 cm apart are charged to +12.5 nC. They are suddenly connected together by a 0.218-mm-diameter copper wire stretched taut from the center of one plate to the center of the other. Part A What is the maximum current in the wire? Express your answer with the appropriate units. ► View Available Hint(s) Imax = 2.67 10³ A ?
- Some human nerve cells have a long, thin cylindrical cable (the axon) from their inputs to their outputs. Consider an axon of radius -6 4.9 x 10⁰ m and length 0.55 m. The resistivity of the fluid inside the axon is 0.50 2. m. Part A Determine the resistance of the fluid in this axon. Express your answer with the appropriate units.In an integrated circuit, the current density in a 2.3-um-thick x 75-um-wide gold film is 7.0x105 A/m² Part A How much charge flows through the film in 15 min? Express your answer to two significant figures and include the appropriate units. Q = μA Value Submit Request Answer Units ?Probler It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. A person's leg meas-ures 40 cm between the knee and the hip, with an average leg diameter (ignoring bone and other poorly conducting tissue) of 12 cm A potential difference of 0.78 V causes a current of 1.6 mA. Part A What are the fractions of muscle and fat in the leg? Express your answer using two significant figures separated by a comma. fm, ff = 91,9