In one short sentence, explain why we calculate the root-mean-square of say the AC (alternating current) I(t) as a function of time, instead of simply calculating the average AC current?

Q: Military aircraft use 400-Hz AC power, because it is possible to design lighter-weight equipment at…

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Q: A transformer connected to a 120 V (rms) ac line is to supply 12.0 V (rms) to a portable electronic…

A: A transformer that increases the voltage from primary to secondary is called a step-up transformer.…

Q: The peak value of an alternating current in a 1500 W device is 5.4 A. What is the rms voltage across…

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Q: In RL Series AC Circuit, if the resistance is double the inductive reactance, the phase difference…

A: Tan θ= XL /R

Q: An AC power generator produces 20 A (rms) at 400 V. The voltage is stepped up down 120V by an ideal…

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Q: In the simple AC circuit shown on the right, the impedance is Z = 150 Ω and the current is I =…

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Q: When a 4uF capacitor is connected to a generator whose rms output is 30 V, the current in the…

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Q: The phase difference between voltage and current in an ac circuit with only capacitor is: O a. 90…

A: In RC circuit when current is zero voltage is maximum.

Q: When we draw à phásór tó geometrically represent current and potential difference in driven AC…

A: Phasor diagram is a method to represent the scalar quantities like current and voltages as vector to…

Q: A transformer has a primary coil with 400 turns of wire and a secondary coil with 3,200 turns. An AC…

A: Number of turns on primary side (Np) = 400 turnsNumber of turns on secondary side (Ns) = 3200…

Q: The alternating current through the 15 Ω heating element of a toaster produces power at 980 W.…

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Q: When an ac generator with a frequency of 180 Hz and an rmsvoltage of 36 V is connected to an RC…

A: Find the impedance of the circuit. Z=vrmsIrms=36 V0.28 A=128.6 Ω

Q: The peak value of an alternating current in a 1800 −W device is 5.8 A. What is the rms voltage…

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Q: The peak value of an alternating current in a 1900-WW device is 4.2 AA . What is the rms voltage…

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Q: In an AC circuit, the emf (e) and the current n atany instant are given respectively, by e = E, sin…

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Q: The voltage and current through a capacitor connected to an ac generator are shown (super-imposed)…

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Q: time will take one cycle

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Q: • At resonance, the rms current in an RLC circuit is 5.8 A. If the rmsvoltage of the generator is…

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Q: Explain why at high frequencies a capacitor acts as an ac short, whereas an inductor acts as an open…

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Q: In an AC circuit containing a resistance load only: a. Does the current reach its maximum peak value…

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Q: The emf of an ac source is given byv(t) = V0sin ωt, where V0 = 100 V andω = 200π rad/s. Calculate…

A: Given: The emf of an AC source is v(t) = V0sin ωt. The voltage is V0=100 V. The angular velocity is…

Q: AC circuit, the ratio of RMS value to pick value of current is total power dissipated in the se

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Q: In the AC circuit shown in Figure P output voltage of the AC source is A 0,250 AV for the first time…

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Q: Which of the following 120 V ac device costs more to operate: (a) One that draws an rms current of…

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Q: An ac generator with an rms voltage of 120 V and a frequency of 60.0 Hz is connected inseries with a…

A: Given data: The rms voltage of the ac generator, Vrms=120 V. The frequency of the ac generator,…

Q: In a certain series RLC circuit, Ims = 9.00 A, AV ms = 200 V, and the current leads the voltage by…

A: a) The total impedance Z of the circuit is calculated by using the following equation. Let the…

Q: The average ac current delivered to a circuit is zero. Despite this, power is dissipated in the…

A: Average ac current is zero

Q: The voltage in an AC ckt varies harmonically with time with a maximum of 180V. At what angle in its…

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Q: why it is relatively easy to change the amplitude of an AC voltage to a higher or lower value?

A: Question: why it is relatively easy to change the amplitude of an AC voltage to a higher or lower…

Q: The voltage of the power supply in an AC-DC coupled circuit is given by the function…

A: Solution: Given: V(t) = voltage of power supply (AC + DC) in volt at time t = 130 sin5t + 18 Vmax =…

Q: Discuss why it is relatively easy to change the amplitude of an AC voltage to a higher or lower…

A: (AC) the movement  of electric charge which was in  repeatedly  in opposite direction AC voltage:…

Q: The voltage and current through a capacitor connected to an ac generator are shown (super-imposed)…

A: Given : Peak voltage (Vo) = 99 V (from graph) Peak current (Io) = 2.8 A (from graph) Time for 1.75…

Q: In an alternating current circuit, the current amplitude versus the driving angular frequency wa…

A: We need to calculate the capacitance of the circuit, given the graph of current amplitude vs driving…

Q: The emf of an ac source is given byv(t) = V0sin ωt, where V0 = 100 V andω = 200π rad/s. Find an…

A: Part A. Capacitor = C = 20×10-6 F Peak voltage = Vo=100 V Angular Frequency = ω=200π rad/s Therefore…

Q: In the simple AC circuit shown on the right, the impedance is Z = 350 Ω and the current is I =…

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