Problem 2: A component uses 55.04 W of power and has a resistance of 16.8 2. Determine the electric current through the component (in A). O 1.81 A O None of These O 1.87 A O 1.85 A O 1.83 A
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- 1.15 When a car has a dead battery, it can often be started by connecting the battery from another car across its terminals. The positive terminals are connected together as are the negative terminals. The connec- Si tion is illustrated in Fig. P1.15. Assume the current i in Fig. P1.15 is measured and found to be 40 A. a) Which car has the dead battery? b) If this connection is maintained for 1.5 min, how much energy is transferred to the dead battery? Figure P1.15 12V 12VWhat is the resistance (in units of Q) of a wire made of a material with a resistivity of 3.2 × 10-8 Q . m , if its length is 39.3 m and its diameter is 0.50 mm? Select one: A. 2.47 B. 22.12 OC. 6.40 D. 14.26 O E. 1.6051&page=1 What is the resistance (in units of Q) of a wire made of a material with a resistivity of 3.2 x 10-8 Q. m, if its length is 10.7 m and its diameter is 0.50 mm? Select one: O A. 6.02 OR. 0.67 OC.0.44 OD. 3.88 OE. 1.74 Next page 601 AM A O G d ENG 4/15/2021
- mobile battery during a charge cycle are shown in 1.26 The voltage and current at the terminals of an auto- Fig. P1.26. a) Calculate the total charge transferred to the battery. b) Calculate the total energy transferred to the battery. Figure P1.26 v (V) bnohostib 24 Loiwollol sd lo 16 8- 8. 12 16 20 t (ks) i (A) maxi 24 16 8- the che 4 8. 12 16 20 t (ks)1.9. A block of conductor has the dimensions Lo x 2Lo x 4Lo. As shown in the figure below, the same battery is connected across the conductor in three different configurations. Which configuration draws the smallest current from the battery? All configurations draw equal current. 21 Lo 4Lo 4LO (a) (b) (c) (d)Q1/ A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm? at temperature of 0°C, passes a current of 7.9 A when connected to d.c. supply at 240 V. Calculate (a) resistivity of the wire, (b) the current which will flow when the temperature rises to 55 °C. The temperature coefficient of the resistance wire is 0.00029 / °C.
- 003 A wire is made of a material with a resis- tivity of 4.18635 x 10 2 - m. It has length 5.78293 m and diameter 0.78225 mm. What is the resistance of the wire? Answer in units of 2.Q3.a.Calculate the current density for Aluminum wire has radius 1mm and current 1mA? 318.31A/m? b. Calculate the drift speed for electrons in the wire ? 3.29*10-8 m/sWhat is the resistance (in units of 2) of a wire made of a material with a resistivity of 3.2 x 10-8. m, if its length is 63.2 m and its diameter is 0.50 mm? Select one: O A. 2.57 В. 3.98 OC. 22.94 O D. 10.30 O E. 35.58
- A current of 4.4 A flows for 16.0 s through a conductor. Calculate the number of electrons that pass through a point in the conductor during this time. Answer format: 1.23e+45A TV works properly under the voltage of 4V= 110 V with power P = 1560 W. Express the current I through the power P and the voltage AV. I = Calculate the working current of the TV in A. I = Express the resistance R through the voltage AV and the current I. R = |Calculate the numerical value of R in 2. R =27. What is the sum of : 81 um + 96 cm + 148 mm A. 1.108081 m В. 1.108 т С. 1.11 т D. 1.1 m 28. The voltage V across a resistor was measured to be 898 mV and the current / through the resistor was measured to be 0.45 A. What should the resistance be? A. 2000 ohms B. 1996 ohms C. 2.0 ohms D. 2 ohms