Suppose a motor connected to a 120 V source draws 10.0 A when it first starts. (a) What is its resistance? (b) What current does it draw at its normal operating speed when it develops a 100 V back emf?

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Q: When the switch S is toggled to the left, the capacitor C charges through the resistor R. When the…

A: Resistor used for charging VC=ε1-e-tRCR=-tCln1-VCε=-1.30 s8.50 μFln1-755 V1260 V1 μF10-6 F=1.67×105…

Q: Suppose a motor connected to a 120 V source draws 10.0 A when it first starts. (a) What is its…

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Q: Suppose a motor connected to 117 V source draws 20.2 A when it first starts. (a) What is its…

A: current = voltage/resistance

Q: A small town with a demand of 800 kW of electric power at 220 V is situated 15 km away from an…

A: a) Total resistance= On substituting Power loss=

Q: A motor operating on a 270 V source has a 165 V back emf at operating speed and draws a 12.5 A…

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Q: Integrated Concepts Hydroelectric generators (see Figure 20.43) at Hoover Dam produce a maximum…

A: a) The expression for output power is P=VI Substitute values in the above equation…

Q: A motor has an armature resistance of 3.75 Ω.If it draws 8.20 AA when running at full speed and…

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Q: Suppose a motor connected to a 130 V source draws 19.5 A when it first starts. (a) What is its…

A: The emf of the source is ξ=130 V. The current is i=19.5 A The back emf is V=100 V   We have to find…

Q: (!) THE FOLLOWING QUESTIONS ARE BASED ON THE INFORMATION GIVEN HERE. In the circuit shown in the…

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Q: (a) The flow of water in a river measured to be 11000 m3 / hour. A 52m waterfall found close to a…

A: a) Given,  Volume flow rate = 11000 m3/s   Height of waterfall = 52 m  The power capacity of a…

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A: The Energy delivered to an electric device: The energy delivered to an electric device is equal to…

Q: uppose a motor connected to a 130 V source draws 19.0 A when it first starts. (a) What is its…

A: Voltage applied to motor, V =130 Vcurrent draws , I = 19 A

Q: A galvanometer has a coil resistance of Realy = 84.9 S2. It is to be made into a voltmeter with a…

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Q: A 32.0-0 resistor and a 20.0-0 are connected in parallel, and the combination is applied across a…

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Q: A certain electric motor draws a current of 43 A when connected to 120 V. (a) What is the motor's…

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Q: (a) In the figure what value must R have if the current in the circuit is to be 1.3 mA? Take ₁ = 2.7…

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Q: The owner of a 3 hectares piggery located at Texas owned a 5 kw of electric generator pump.…

A: Here, We Have, V = 120 and 140 volt R = 0.42 ohm

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A: The power dissipated in a resistor connected to an AC source is, Pavg=I2rmsRthen, Pavg=I2R2 the…

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Q: What is the power rating of the hair dryer in watts? [Select] Depending on the application, the time…

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Q: The cost of energy delivered to residences by electrical transmission varies from $0.070/kWh to…

A: Given data : The cost of energy delivered to residences by electrical transmission varies from…

Q: (d) an extension cord having a 0.06 resistance and through which 4.5 A is flowing; P= W (e) a…

A: When the current flows through the electronic device or the conductor the energy is lost in the form…

Q: Verify that the units of a volt-ampere are watts, as implied by the equation P = IV .

A: The unit of power =W (Watt) Unit of current =A (Ampere) Unit of voltage =V (Volts)

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Q: The motor in a toy car operates on 6.00 V, developing a 4.50 V back emf at normal speed. If it draws…

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Q: A cassette recorder uses a plug-in transformer to convert 120 V to 12.0 V, with a maximum current…

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Q: Suppose a motor connected to a 115 V source draws 19.0 A when it first starts. a) What is its…

A: Voltage applied to motor, V =115 Vcurrent drawn, I = 19.0 AFrom ohms law Resistance =

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Q: (a) What is the voltage output of a transformer used for rechargeable flashlight batteries if its…

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Q: A certain electric motor draws a current of 10 A when connected to 120 V. (b) How much energy does…

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Q: An array of solar panels produces 8.65 A of direct current at a potential difference of 148 V. The…

A: Given: A solar panel produces a current of 8.65 A at a potential difference of 148 V.  The…