Find the current through the 42, 89, and 100 resistors in the following circuit. Find the power through the 100 resistor and voltage across the 40 resistor. www 6V 16V 452 www HA 10Ω
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- Silicon is a semiconducting metal with a resistivity of 640 Ω · m. (a) Determine the current per unit area through a 5.02 V silicon junction with a length of 1.64 mm. (Enter your answer in A/m2.) (b) Find the current (in A) through the junction if its cross-sectional area is 3.00 ✕ 10−5 m2.Please help: Pacemakers designed for long-term use commonly employ a lithium-iodide battery capable of supplying 0.42 A•h of charge (A) How many coulombs of charge can such a battery supply? Express your answer using two significant figures (B) If the average current produced by the pacemaker is 5.6 micro Amps, what is the expected lifetime of the device? Express answer using two significant figuresA 220. V potential difference is applied to a space heater that dissipates 440. W during operation.(a) What is resistance during operation?(b) At what rate do electrons flow through any cross-section of the heater element? (c) The space heater has a resistance of 27.5 Ω at 25.0 °C and the temperature coefficient of resistivity is α = 4.50x10^-3 °C^-1. What is the temperature of the space heater internal elements?
- The power rating of a resistor is the maximum power it can safely dissipate without being damaged by overheating. If the power rating of a certain 17 kΩ resistor is 5.0 W, what is the maximum current it can carry without damage?What is the greatest allowable potential difference across the terminals of the resistor?(II) A 12-V battery causes a current of 0.60 A through aresistor. (a) What is its resistance, and (b) how many joulesof energy does the battery lose in a minute?A Pentium IV microchip has dimensions of 217 mm x 217 mm. Suppose each transistor on the chip is made up of a 10 x10 square of atoms (that is 100 atoms per transistor). How many transistors could fit on the Pentium IV chip if the spacing between the silicon atoms is 0.54 nm?
- Does the resistivity of a copper increase or decrease when it is heated to a higher temperature? How does the grain size influence the copper resistivity? Please explain.5 part A: If u(C) = 0.2C. What in the uncertainty of a 500 mF capacitor in mF? 5 Part B: If C = 500 mF and R = 8000 W , and V = 5 V. What is the voltage across the resistor in an RC circuit if it started out fully charged and the time since we started charging 6 seconds ago?Suppose you have a rod of pure silicon with a diameter of 2.79cm and a length of 20.6cm. These rods are often used in experiments, such as the Large Hadron Collider in France/Switzerland to detect high-energy particles, and they have a very high resistivity of 2300Ω⋅m. What current, in amperes, flows through the rod when a potential difference of 1.23* 10^3 V is applied between its ends ?
- (a) Determine the total resistance of the circuitshown below. t(b) Determine the total current of the circuit. t(c) Determine the current through eachresistor. tThe graph below shows the current that flows through a device called a diode at different voltages. Instead of the numbers presented on this graph, consider a diode for which current varies with voltage according to the equation I = V11.9. Hint: Plot this equation on your calculator. a. What is the resistance of the diode when a potential difference of 0.59 volts is placed across it? Include units in your answer. b. What is the resistance of the diode when 0.72 volts is placed across it? Include units in your answer.A particular electronic-code lock provides over 500 billion combinations. Moreover, it can sustain an electric shock of 168286 V. Suppose this potential difference is applied across a series connection of the following resistors: 14.2 kΩ, 33.9 kΩ, and 239.3 kΩ. What current would pass through the resistors?
