A wire is 200.0 cm long and has a resistance of 50.0 2. This wire is cut into five equal parts. a. What is the resistance of cach picce of wire? b. If the five parts were bundled together, what is the resistance of the resulting wire?
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- Unreasonable Results (a) What current is needed to transmit 1.00 102 MW of power at 10.0kV? (b) Find the resistance of 1.00 km of wire that would cause a 0.0100% power loss. (c) What is the diameter of a 1.00-km-long copper wire having this resistance? (d) What is unreasonable about these results? (e) Which assumptions are unreasonable, or which premises are inconsistent?A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?(a) Of what material is a wire made, if it is 25.0 m long with a diameter of 0.100 mm and has a resistance of 77.7 at 20.0C ? (b) What is its resistance at 150.0C ?
- a. What should be the value of X such that the total resistance of the circuit is 22 ohms? b. What is the voltage across R4? . How much current is flowing through R3?Choose the CORRECT answer for each item. 1.There are two wires, one is made of copper and the other one is silver. These two wires of the same length are made, one from each of the materials. Is it possible for each wire to have the same resistance? Yes, because the two wires have the same length. Yes, because copper and silver have the different resistivity. No, because the two wires have the same length. No, because copper and silver have the different resistivity. a. b. C. d. 2.A flashlight requires two 1.5-volt batteries for it to light. The current that flows through it is equivalent to 0.15 A. In an hour of operation, how much charge flows in the system? a. 520 C b. 540 C c. 560 C d. 580 C 3.A hair blower contains a heating element which has a resistance of 57 Q. This heating element is energized by a 220-V outlet. What is the current that flows in the heating element? a. 3.9 A b. 4.9 A c. 5.9 A d. 6.9 A1. An electric flat iron draws a current of 15 A when connected to a 110 V line. a. What is the resistance of the flat iron? b. What is the resistivity of the heating element if it is a wire that is 2.5 cm long with cross-sectional area of 2.0 x 104 m??
- b. A 60-volts potential difference is applied to the circuit below. i. Find the equivalent resistance of the circuit, ii. The current in the circuit, iii. The current in the 10-ohm resistor. 40 BOV 140 100 c. Calculate the resistance per unit length of a 22-gauge Nichrome wire of radius 0.321 mm.3. A 100 W incandescent light bulb operates at a potential difference of 85 V. A. What is the current in the bulb? B. What is the resistance of the bulb? C. If the bulb is replaced by a bulb with twice the resistance found in part b, what is its power rating when operated at the same potential?Six resistors are connected to a battery. It is known that R1=5 ohm, R2= 25 ohm, R3= 80 ohm, R4= 10 ohm, R5= 60 ohm, R6= 10 ohm. a. What is the equivalent resistanceof the circuit? b. If the battery voltage is 48 V and if we ignore its internal resistance, what is the total current Itot in the main path? c. What is the current I3 through R3? d. What is the current I4 through R4 ? What is the voltage V4 across R4?
- A piece of wire of length 31.5 cm and cross-sectional area 227.4 cm² is made into a resistor of resistance 713.8 ohm. What is the resistivity of the material used to create the resistor? O a. 5113020.78 ohm-metre O b. 10.04 ohm-metre O c. 5152.96 ohm-metre d. 98.88 ohm-metre Oe. 51.53 ohm-metre Of. 515295.62 ohm-metre O g. 0.10 ohm-metre Oh. 0.99 ohm-metreYou are measuring the current of a certain component in a circuit board and it reads negative (-) 8.77MA. What does it means? a. There is an error on the digital multimeter. b. The numerical value of the current is negative. c. There is an error in the circuit. It is short circuit. d. It indicated an inverse direction. You have switched the positive and negative terminal of the DMM.A 17.7-ohm electric blanket, a 25.9-ohm TV, and a 36.8-ohm light bulb are connected in parallel. A difference in potential of 118 volts is applied to the combination.a. What is the equivalent resistance of the circuit? Include units in your answer. b. What is the total current in the circuit? Include units in your answer. c. What is the current through the electric blanket? Include units in your answer