6. An electric stove draws 7.5 A from a 120 V dc source. Wha is the maximum value of an alternating current which will produce heat at the same rate? *
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- Two 115-V incandescent lamps A & B are connected in series across 230-V de source. Lamp A is rated 100 W and lamp B is rated 60 W. Which lamp is abnormally bright and hence will burn out soon? a) Lamp A b) Lamp B c) Both lamps will be abnormally bright d) Both lamps will work normallyTwo 115-V incandescent lamps A & B are connected in series across 230-V dc source. Lamp A is rated 100 W and lamp B is rated 60 W. Which lamp is abnormally bright and hence will burn out soon? a) Lamp A b) Lamp B c) Both lamps will be abnormally bright d) Both lamps will work normally O a. Lamp A O b. Lamp B O c. Both lamps will be abnormally bright O d. Both lamps will work normallyWhen a voltage of 100V at 50Hz is applied to a choking a coil A, the current taken is 8A and the power is 120W, when applied to a coil B, the current is 10A and the power is 120W. what power will be is 10A and the power is 120W. what power will be taken when 100V is applied to the two coils connected in series?
- Explain why the voltage increases less rapidly as the DC current increases.Attempt Only if you are sure . a 24 V DC voltage source is controlled by a rotational potentiometer. when the position indicator is at 0 degree volltage reading is 24 V. When position indicator is 12 degree voltage reading is 10 V. Calculate the voltage when position indicator shows 3 degree.Which of the following is NOT a variable in voltametric methods? A. How the current is applied B. How the potential is applied C. The inclusion of convection D. All the above E. Type of working electrode
- Assume that the indicator has a wire resistance of 0.2 ohms and the resistor has a value of 250 ohms. If a current of 3 A is flowing through the inductor, what will be the maximum induced voltage when the switch is opened?In the figure below you see the sketches for the front and back of an electrical circuit board. The board is cut into a trapezoidal shape and is made of plastic. On the back of the board there is conductive paint shown here in green. On the front there are some resistors and capacitors, in addition to terminals for inserting the leads from a DC power supply. The legs of the resistors and capacitors go through the holes on the board and are soldered to the conducting paint on the back side. You also have a multi-meter which you can use as an ammeter or a voltmeter. 16 v 4700 16 10 8 O- 7 3. 6. 4 O+A coil has a time constant of 1 second and an inductance of 10 H. What is the value of the current 0.1 second after switching on to a steady voltage of 100 volts?
- A direct current of 12.5 A flows in a 25-ohm resistance. Determine the maximum value of an alternating current that will produce heat at the same rate in this resistance. Expresss answer to the nearest hundredths.Could you slove this dc electrical circuitWhen a voltage of 100 volts at 50 Hz is applied to a series connection of a resistor Aand an inductor A, the current taken is 8 A and the power is 120 watts. When appliedto another series connection of a resistor B and an inductor B, the current is 10 A andthe power is 500 watts. What current and power will be taken when 100 V is appliedto the two coils in series?