1. A 1.5 volt source is used to power a bulb. The filament wire of the...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. A 1.5 volt source is used to power a bulb. The filament wire of the bulb has a resistance of 20 ohms. Solve for the current flowing through the bulb. If the resistance of the bulb is increasing at 0.1 ohm/minute and at the same time, the voltage is being depleted at 0.2 volts/min, what is the rate of change on the current? (10 marks) 2. From P = W/t, I = Q/t, W = QV, express P as a function of I and V. (5 marks) 3. Three electrical devices, with ratings of 30 ohms, 50 ohms, and 60 ohms are connected in series to a 12 volt source. Draw the schematic diagram and the table and show all computations to fill up the table. (15 marks) 4. In problem 3, suppose you connect the three electrical devices are connected in parallel. Draw the schematic diagram and the table and show all computations to fill up the table. If the resistances of the electrical devices are increasing at 0.3 ohms/minute, 0.5 ohms/min, and 0.6 ohms/minute, respectively, what is the change in the total resistance? 1. A 1.5 volt source is used to power a bulb. The filament wire of the bulb has a resistance of 20 ohms. Solve for the current flowing through the bulb. If the resistance of the bulb is increasing at 0.1 ohm/minute and at the same time, the voltage is being depleted at 0.2 volts/min, what is the rate of change on the current? (10 marks) 2. From P = W/t, I = Q/t, W = QV, express P as a function of I and V. (5 marks) 3. Three electrical devices, with ratings of 30 ohms, 50 ohms, and 60 ohms are connected in series to a 12 volt source. Draw the schematic diagram and the table and show all computations to fill up the table. (15 marks) 4. In problem 3, suppose you connect the three electrical devices are connected in parallel. Draw the schematic diagram and the table and show all computations to fill up the table. If the resistances of the electrical devices are increasing at 0.3 ohms/minute, 0.5 ohms/min, and 0.6 ohms/minute, respectively, what is the change in the total resistance?
Expert Answer:
Related Book For
Posted Date:
Students also viewed these accounting questions
-
When a certain 1.5-V battery is used to power a 3-W flashlight bulb, it is dead after an hours use. If the battery costs $0.50, what is the cost of a kilowatt-hour of electric energy obtained in this...
-
An electric motor is used to power an assembly line. The motor runs continuously at various speeds and after a certain number of hours must be replaced. A food-processing company that uses motors of...
-
Ethanol blended with gasoline can be used to power a "flex-fueled" car. One particular blend that is gaining in popularity is E85, which is 85 % ethanol and 15% gasoline. E85 is 80% cleaner burning...
-
Discuss why marketing management is important to an organization, and how corporate and business strategy analysis gives an organization a competitive advantage.
-
What are the various types of intercompany transactions for which a transfer price must be determined?
-
Bristol-Myers Squibb Co. reports the following long-term debt as part of its MD\&A in its 2012 10-K (\$ millions). a. What does this information indicate about Bristol-Myers Squibb's future payment...
-
Richmond Sporting Goods uses the LIFO inventory method and values its inven tory using the lower-of-cost-or-market (LCM) rule. Richmond Sporting Goods has the following account balances at May...
-
The fresh feed to an ammonia production process contains nitrogen and hydrogen in stoichiometric proportion, along with an inert gas (I). The feed is combined with a recycle stream containing the...
-
Sales Expenses Avoidable Unavoidable Total expenses Income (loss) Department B $ 129,360 21,200 105,200 126,400 Department R $ 73,200 75,680 Department S $ 115,360 Department V $ 87,040 Department X...
-
You have been hired as a consultant by Molycorp, a rare earth mineral mining company headquartered in Colorado. Your job is to evaluate a huge financing decision the company faces as part of its...
-
Evaluate the expression, reduce to simplest form. (a) 2l082 7 Your answer is (b) 10log 6 Your answer is (c) eln 2 Your answer is
-
For the vectors shown below find the magnitude of |v v| and the acute angle (in degrees) that v V2 makes with respect to the x axis. A positive angle means the angle is above x axis, and a negative...
-
A building, measuring 200 feet tall, casts a shadow along flat ground. What is the rate of change of the angle of elevation when the length x of the shadow is 100 feet. de dz X=100
-
Convert the point from cylindrical coordinates to spherical coordinates. (3, , 4) (p, 0, 0) = Need Help? Read It x
-
Consider the surface given by x - 4x + y = z. (a) Describe the traces of the surface in z = k. (b) What is the minimum value of k such that z = k intersects the surface. Explain. (c) Find all points...
-
If the fixed manufacturing costs were $23,800 and the fixed selling and administrative expenses were $10,780, prepare an income statement according to the variable costing concept. Round all final...
-
You are an active trader in the bond market. You are evaluating all of the bonds issued by Spice Trading, Inc. One bond has a face value of $1,000 and 71% annual rate coupons, that are paid twice a...
-
The unadjusted trial balance of Secretarial Services is as follows: SECRETARIAL SERVICES Unadjusted Trial Balance as at 31 December 2017 Account Debit Credit Cash at bank Office supplies Prepaid...
-
In an effort to lose weight, a person runs 5 km per day at a speed of 4 m/s. While running, the persons body processes consume energy at a rate of 1.4 kW. Fat has an energy content of about 40 kJ/g....
-
An empty dump truck coasts freely with its engine off along a level road. (a) What happens to the trucks speed if rain starts to fall and water collects in it? (b) The rain stops and the accumulated...
-
The operation of the laser is based upon a. the uncertainty principle b. the interference of de Broglie waves c. stimulated emission of radiation d. stimulated absorption of radiation
-
A pair of \(20^{\circ}\) full involute spur gears having 40 and 60 teeth of module \(4 \mathrm{~mm}\) are in mesh. The smaller gear rotates at \(1440 \mathrm{rpm}\). Find (a) sliding velocity at...
-
Calculate the minimum number of teeth on a pinion to avoid interference to have a speed ratio of 2.5:1. The pressure angle is \(20^{\circ}\) and addendum of one module of gear may be used.
-
The path of contact in involute gears is (a) a straight line (b) involute path (c) curved path (d) circle.
Study smarter with the SolutionInn App