Lab 3 - Ohm's Law

The efficiency for incandescent light bulbs is typically about 14 lumens per watt (lm/W) and that for LED bulbs is typically about 90 lm/W. Use Ohm’s law to calculate the total light output in lumens of each type of bulb if the incandescent bulb has resistance of 10 Ω and the LED bulb has resistance of 2 Ω and each are supplied with a current of 2 A.   Question 1 options:   Incandescent: 230 lm. LED: 360 lm.   Incandescent: 7840 lm. LED: 64800 lm.   Incandescent: 112 lm. LED: 3600 lm.   Incandescent: 560 lm. LED: 720 lm.

1. Discuss your observations on both series and parallel circuit. (Brightness of light bulb) 2. Briefly discuss the differences of series and parallel circuit based on current, voltage, and resistance.  3. Do batteries last longer in series or parallel?  4. What is Electricity?  5. How do electrons move from one atom to another?  6. Discuss the difference between direct current and alternating current?  7. What is circuit?  8. What is the purpose of a switch?  9. What do you this is life without electricity?

can you create a diagram of this circuit? resistance:220 ohm diode 1N4007 BC548B Transıstor 1.5 V battery(current source) Capacıtor 470uf  25V shock coil ( I made 15 and 30 wraps to feritte core)(ı do not know the value.)

Two metallic terminals protrude from a device. The terminal on the left is the positive reference for a voltage called Vx (the other terminal is the negative reference). The terminal on the right is the positive reference for a voltage called Vy (the other terminal being the negative reference). If it takes 1 mJ of energy to push a single electron into the left terminal, Determine the voltages Vx and Vy.

Given:Vb = 100 voltsR = 10000 ohmsC = 200 μFAssuming that after a long period of time, the switch is flipped from position "A" to position "B" at t=0.  Calculate the voltage across the resistor after 3 TC.

A wire has a circular cross-section of radius r= 3.53 mm. The conductivity of the wire is 1x10^5 (Ohm, meter) and its lengthis 2m. The total resistance of the wire in Ohms is:O a. 0.51O b. 0.72ç. 0.26O d. 5136.07O e. 797497.60

During its use, the temperature of the aluminum wire has increased from room temperature to 80 degree Celsius. Calculate the increase in the resistivity of the aluminum wire. The resistivity of the aluminum at room temperature (20 degree C) is 2.75 x 10^(-8) ohm-meter, and the temperature coefficient of resistivity is 0.00039/degree C.

A copper coil has a resistance of 200 ohms when its mean temperature is 0 degree centigrade. Calculate the resistance of the coil when its mean temperature is 80 degree centigrade. Temperature coefficient of copper is 0.004041 centigrade-1a) 264.65 ohmb) 264.65 kilo-ohmc) 286.65 ohmd) 286.65 kilo-ohm

A tungsten wire has 25 ohms of resistance at 20 degrees Celsius. Calculate its resistance at 100 degrees Celsius.

Please show your detailed solution Number 37 What value of inductive reactance is required to limit current through it to 25 mA when the voltage across it is 35 Vrms? A. 1400 ohms C 1979.9 ohms B. 891.27 ohms D. 14,000 ohms

I need solution please electric circuit

EE360 Electric energy Solve this homework problem with details and werit all the explanation please (Note: change the x and y in the box to x=9 and y=0)

True or False: 1. When there is electric current, there is electricity. 2. A wire resistance of 1 ohm per 1000 ft is bigger than a wire resistance of 1 ohm per 1000 m.  3. DC voltages are the usual voltages we generate in conventional power plants.

Thermal question. A system has two thermal layers. The first layer has a Rth 0.5 K/W, and Cth 0.8 J/K, and the second layer has a Rth 0.2 K/W, and Cth  0.4 J/K. The ambient air temperature is 50 °C. The power dissipation in the system is 100 W. What is the temperature of the second layer 5 s after a system is switched off? Please do not include any units in your answer.

Chromium can be electroplated from aqueous potassium dichromate, with the reduction shown below. If a current of 6.0A and a voltage of 4.5V are used:  Cr2O7+(aq) + 14H+(aq) + 12e- -> 2Cr(s) +7H2O a) How many hours would it take to completely convert 215mL of 1.25M K2Cr2O7 to elemental chromium?b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

An electric water heater has a rating of 1 kW,230 V. The coil used as theheating element is 10m long and has a resistivity of 1.724 x 10^-6 ohm-cm. Determine the required diameter of the wire in mils?   the answer is 2.52 mils (according to ECE board exam answer keys) I don't know how to get it. Can you show me?

(a).i. An electric heating element to dissipate 580W on 240V is to be made from nichrome ribbon 1mm wide and thickness of 0.005mm. Calculate the length of the ribbon required if the resistivity of nichrome is 1.1x 10-6Ωm. ii. The resistance of a coil aluminum wire at 21OC is 210Ω. The temperature of the wire is increased and the resistance rises to 240Ω. If the coefficient of resistance of aluminum is 0 .0039/OC at 21OC, determine the temperature to which the coil has risen. b) A capacitor is constructed with parallel plates and has a value of 50pF. What would be the capacitance of the capacitor if the plate area is doubled and the plate spacing is halved?

(a).i. An electric heating element to dissipate 580W on 240V is to be made from nichrome ribbon 1mm wide and thickness of 0.005mm. Calculate the length of the ribbon required if the resistivity of nichrome is 1.1x 10-6Ωm.ii. The resistance of a coil aluminum wire at 21OC is 210Ω. The temperature of the wire is increased and the resistance rises to 240Ω. If the coefficient of resistance of aluminum is 0 .0039/OC at 21OC, determine the temperature to which the coil has risen.

Answer the relationship of the following electrical values: Resistance and current Electrical power and voltage Electrical work and resistance Electrical energy and voltage Current and electrical power

.i. An electric heating element to dissipate 580W on 240V is to be made from nichrome ribbon 1mm wide and thickness of 0.005mm. Calculate the length of the ribbon required if the resistivity of nichrome is 1.1x 10-6Ωm.ii. The resistance of a coil aluminum wire at 21OC is 210Ω. The temperature of the wire is increased and the resistance rises to 240Ω. If the coefficient of resistance of aluminum is 0 .0039/°C at 21°C, determine the temperature to which the coil has risen.b) A capacitor is constructed with parallel plates and has a value of 50pF. What would be the capacitance of the capacitor if the plate area is doubled and the plate spacing is halved?

The resistance of a 10 AWG copper wire is 20 ohms at 50 degrees Celsius. Calculate its length.

Nichrome ribbon resistor elements each has a resistance of 1 ohm. The element is made from sheet of nichrome alloy, 0.025 cm thick. If the width of the ribbon is 0.3 cm, what length is required per element? [centimeters, 1 decimal place]

Calculate the current of the circuit (i.e., the current leaving from the point a Voltage is 229/9

DEGREE: ELECTRICAL ENGINEERING  SUBJECT/COURSE: AC CIRCUITS   NOTE: Please solve in this way.    1. Please have a good handwriting, some of the answers are not readable. Thank you! 2. GIVEN.(include symbols and units) 3. REQUIRED/FIND/MISSING (with symbol/s) 4. ILLUSTRATION (Required). 5. STEP-by-STEP SOLUTION with Formulas and Symbols. No Shortcut, No skipping, and detailed as possible 6. FINAL ANSWERS must be rounded up to three decimal places   PROBLEM: • Three identical resistance connected in wye carry a line current of 18A. If the same resistances are connected in delta across the same supply,what is the line current?

3.Question (a) Look up the definition of unit for clothing insulation, called “clo” value. Convert 1.5 clo to a value with an unit in international standard. (b) In the winter, people wear more cloth to keep themselves warm. You have the option of wearing 2 jackets that are 0.3 cm thick or 1 jacket that is 0.6 cm. Assume they are made of the same material and neglect any effect from cloth openings. Which option should you choose to keep you warm? Draw a thermal circuit to help with your discussion.

=== Define or explain the following terms: 1) voltage (across an element) 2) independent voltage source3) independent current source

Every device in a DC, whether a light or electric motor, can be replaced by an electric ________?a.) resistorb.) loadsc. receiverd. conductance