A moving coil ammeter has its full scale deflection changed from 100mA to 500 mA with the addition of a 0.5 Ω shunt resistor. What is the coil resistance? Select one: a. 3.0 Ω b. 2.5 Ω c. 2.0 Ω d. 4.5 Ω

Q: d k k S AV The circuit in figure consists of two identical parallel metal plates connected by…

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Q: A DC winch motor is rated at 20.00 A with a voltage of 115 V. When the motor is running at its…

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Q: Snow White has just baked a pie. Its temperature is initially 248 degrees Celsius. The room temp is…

A: Hi there! Since there are multiple questions posted and it is not mentioned what is to be answered,…

Q: A transformer has 496 turns on its primary and 122 turns on its secondary. (a) Is this a step-up or…

A: (a) For transformer, Here, Vs, Vp, Np and Ns represent the secondary voltage, the primary voltage,…

Q: h energy is stored is 6 mH inductor with 1 amp current. Calculate the power if you consume all the…

A: Given values:- Inductance,(L)=6 mH=6 H ----(1) Current,(i)=1 Amp. ----(2) Time,(t)=100…

Q: A transformer has 700 turns on its secondary and 100 turns on its primary. The primary is connected…

A: Number of turns in secondary coil (N s) = 700 Number of turns in secondary coil (N p) = 100 Primary…

Q: A transformer has 400 turns on its secondary and 100 turns on its primary. The primary is connected…

A: Given :     Number of turns in primary, NP = 100    Number of turns in secondary, NS = 400…

Q: Two inductors of inductances 4H & 8H arranged in series and a current of 10A is passed through them.…

A: The equivalent inductance when the two inductance are connected in series is given by  L = L'  + L''…

Q: L ll R R L + V L ell

A: Please see the answer below

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Q: A transformer has 700 turns on its secondary and 100 turns on its primary. The primary is connected…

A: Given number of turns in primary coil NP  = 100 and in secondary coil Ns = 700 and the voltage on…

Q: You wish to invent a sparker for lightning gas burners. A 1.5-A current from a battery runs through…

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Q: A 250V DC shunt Generator has an Armature resistance of 0.15 ohm and a Field resistance of 200 ohms.…

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Q: A heater coil connected to a 240-Vma ac line has a resistance of 45 2. Part A What is the average…

A: Vrms=240V R=45ohm

Q: A circuit consists of a 35 N resistor and a 580 mH inductor connected in series to a 12 V battery.…

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Q: d k k www +. AV The circuit in figure consists of two identical parallel metal plates connected by…

A: Given: Voltage V=100 V Area A=1778 m2 Distance  d=5 mm=5×10-3 m ε0=9×10-12 C2/Nm2

Q: Suppose a motor connected to a 105 V source draws 24 A when it first starts. Part (a) What is its…

A: Given: The supply voltage is 105 V. The starting current is 24 A. The back emf is 100 V.

Q: 13. Why is alternating current transfer more effective than dc current transfer over long distances?…

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Q: Which of the following graphs shows the phase relationship between voltage V and current /when a…

A: The correct graph which shows the phase relationship between Voltage V and Current I.

Q: The peak current passing through an inductor is 2.0 A. What is the peak current ifa. The peak emf ε0…

A: From Ohm's law, I=vR   The inductive reactance is given by, XL=2πfL   Therefore, I=ε02πfL

Q: A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t…

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Q: An inductor that has an inductance of 14.0 H and a resistance of 40.0 is connected across a 100 V…

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Q: Consider a 27 mH inductor that has a resistance of 4.25 Ω.  Part (a)  What is the time constant, τ,…

A: Concept We have given a LR circuit, with inductance L = 27mH = 0.027 H , and resistance R = 4.25 Ω…

Q: R Consider an RL circuit as shown in the Figure with V = 5 V, L = 10 mH, and R = 2000 Q. After the…

A: V = 5 volts L = 10 mH = 0.01 H R = 2000 ohm

Q: An inductor that has an inductance of 16.0 H and a resistance of 24.0 2 is connected across a 100 V…

A: inductance=16 Hresistance=24Ωvoltage=100 v

Q: Hydroelectric generators at Hoover Dam produce a maximum current of 8.00×103 A at 250 kV. (a) What…

A: The expression for the power output,

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

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Q: A battery charger meant for a series connection of ten nickel-cadmium batteries (total emf of 12.5 V…

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Q: The plug-in transformer for a laptop computer puts out 7.50 V and can supply a maximum current of…

A: Given: Output voltage Vo=7.50 V, Output current Io=1.8 A, Input voltage Vp=240 V. Required: Input…

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A: Given data The emf produced by the generator E1 = 18 V at the frequency n1 = 920 rev/min. Another…

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A: Given, V1 = 180 V I1 = 0.23 A I2 = 6.9 A

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Q: A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t…

A: GivenV = 120.0 VI = 0.840Asin(432 rad/s)t

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A: (a) The power is given by, P=V2R Here, V is the voltage and  The resistance of the bulb filament is…

Q: "In the RLC circuit of the following figure: R = 100 Q, C = 0.1 µF, and L = 0.5 Henry. www QUESTION…

A: R = 100 ohm C = 0.1 μFL = 0.5 henry frequency (f) = 1000 Hz

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Q: 3. A RL circuit in series with L= 3 H and a RC circuit in series with C=3 µF have equal time…

A: Given , 1) L= 3H    (RL circuit in series ) 2) C= 3µF   ( RC circuit in series) Both circuit have…

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Q: ) A transformer has a primary voltage of Vp= 400 V and primary current of I,= 1.5 A. If the measured…

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Q: A circuit consists of a 40 Ω resistor and a 690 mH inductor connected in series to a 14 V battery.…

A: R = 40 ohm L = 0.69 H V = 14 volts Imax = V/R  = 14/40 = 0.35 A di/dt = 7 A/s

Q: A transformer has a primary voltage of Vp= 400 V and primary current of Ip= 1.5 A. If the measured…

A: (a) The formula for the efficiency of the transformer is: Substitute the known values and solve for…

Q: An inductor that has an inductance of 19.0 H and a resistance of 26.0 N is connected across a 100 V…

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Q: A solenoid having an inductance of 6.05 µH is connected in series with a 1.17 k2 resistor. (a) If a…

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Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is developed around the conductor. This flow of current through the coil creates a magnetic field based on Fleming's Right-hand thumb rule. If there is any decrease in the current passing through the inductor, then the magnetic field will also decrease and energy is released through the generation of electric current. There is also a secondary voltage inducing in the same coil due to the magnetic flux, since it opposes any changes in the electric current flowing through the circuit. An inductor is also called choke, coil, or solenoid. A choke is designed to block certain frequencies when the DC current passes. A winding coil is coated with insulation to give extra insulation and protect the circuit. They are usually tightly wrapped around a central core which is cylindrical in nature so that the magnetic flux can be induced. The solenoid is a three-dimension coil that is used to exhibit electromagnetism when the magnetic field is developed due to the current flowing through the coil. The sign convention of the inductor is the same as the power dissipating device. When the current flows into the positive side of the voltage across the inductor, the value is positive and the inductor dissipates power whereas when the inductor releases the power back to the circuit, the current has a negative sign convention.