A 140-Ω resistor connected across a 50.0-Hz ac power supply of voltage amplitude 85.0 V produces heat in the resistor at a certain rate. If you want to replace the ac source with a dc power supply and still produce the same rate of heating, what should be the voltage Vdc of the dc source?

Q: A 200 Q resistor is connected in series with a 4.00 µF capacitor and an ac source. The voltage…

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Q: Q7: A circuit connected to an ac source of emf e =e, sin(100 t) with t in seconds, gives a phase…

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Q: A 28.5 k resistor connected to an AC voltage source dissipates an average power of 0.575 W. HINT (a)…

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Q: At its highest temperature, a space heater has a resistance of 47.5 ohms when it is plugged into a…

A: The average power output of the heater is;Pavg​=278.30WExplanation:Step 1:Step 2:

Q: Problem 4: An AC power supply is connected to a capacitor of capacitance 1.5 μF. At time 0 the power…

A: a)Current through the capacitor is,

Q: Two lightbulbs are designed for use with an ac voltage (rms) of 120 V. One lightbulb is rated at 60…

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Q: A 60-Hz AC generator develops a peak voltage of 170-V. The generator is connected to a lightbulb…

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Q: When an AC source is connected across a 10.0-N resistor, the rms current in the resistor is 7.38 A.…

A: Given data: Resistance (R) = 10.0 Ω The rms current (Irms) = 7.38 A Required: The rms voltage, peak…

Q: An AC power generator produces 49 A (rms) at 3,600 V. The voltage is stepped up to 100,000 V by an…

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Q: A 100 2 resistor is connected to a 220 V, 50 Hz ac supply. (a) What is the rms value of current in…

A: Given-Resistance of the resistor R=100 ohmSupply voltage V=220 VFrequency n=50 Hz

Q: If you placed an AC voltmeter across the outlets of a wall socket in Europe, you would measure…

A: Electric current

Q: À 100 N resistor is connected to a 220 V, 50 Hz ac supply. (a) What is the rms value of current in…

A: Given value--- resistance R = 100 ohm. Voltage V = 220 V. frequency = 50 Hz. We have to find---…

Q: (a) What current flows when a 60.0 Hz, 480 V AC source is connected to a 0.250 μF capacitor? (b)…

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Q: Someone argues that a resistor R=100 Ω run by 5 V DC heats up faster than the same resistor run by 5…

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Q: 120 VAC is applied to a series circuit contains a 20 Ω resistor and a capacitor with a capacitance…

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Q: Phasors and alternating current. A 200 resistor is connected in series with a 4.00 µF capacitor and…

A: Given, v_{A} = (5.00V) cos [(800rad / s) * t] Capacitance=4.00 µF

Q: An AC Power Supply Produces a maximum Voltage Symax = 94V : This Power Supply is connected to a…

A: Given: The maximum voltage is ∆Vmax=94 V.            The resistance is R=20.8 Ω.  An ac circuit with…

Q: The emf of an ac source is given by v (t) = Vo sin wt, where Vo = 100V and w = 200. Find an…

A: Given  The emf of an ac source  v(t) =VosinωtThe voltage Vo              = 100 V.The angular voltage…

Q: What is the average power dissipated by a resistor of resistance R = 25 ohm in an LRC circuit for…

A: Given Resistance R           = 25 ohm Power factor  cos ϕ = 0.25 Voltage Vmax          = 8 V Find…

Q: The intermediate current in the figure shown below is 1.0 A. What is the current through the light…

A: Induced current is proportinal to the number of turns in the coil. So, i1i2=N1N2

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

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Q: What is peak power consumption rate of a 100.0-W AC light bulb?

A: The peak power consumption can be calculated by the formula: Ppeak = 2(P)...................(1)…

Q: A 28.5 k2 resistor connected to an AC voltage source dissipates an average power of 0.515 W. HINT…

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Q: An AC sine wave with an RMS value of 120VAC is connected to a full-wave rectifier. What is the…

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Q: A 100 ohm resistor is connected to a 220 V, 50 Hz ac supply. What is the net power consumed over a…

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Q: What is the peak power consumption of a 120 V AC microwave oven that draws 20 A? P = peak KW

A: as we know that, in case of AC supplyvoltage and current both are changingDue to this reason RMS…

Q: PR (W) 4.0- 2.0- t (ms 10 20 30 in

A: Introduction: The frequency of the wave is defined as the number of cycles per unit time, and the…

Q: The circuit below shows an AC power supply connected to a resistor R = 22.4 0. ΔΙ', R w max @ The…

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Q: The circuit below shows an AC power supply connected to a resistor R= 21.0 0. ΔΙ R www max The…

A: Solution: Given: R = resistance of resistor = 21.0 Ω ΔVmax = maximum voltage from power supply =…

Q: a) Find the RMS current through the resistor. (b) Find the angular frequency of the AC voltage…

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Q: (a) What current flows when a 60.0 Hz, 480 V AC source is connected to a 0.250 µF capacitor? (b)…

A: The capacitive reactance is XC=12πfC Here, XC is the capacitive reactance , f is the frequency ,…

Q: An AC voltage source at 7.3 rad/s is connected to a 1.2 ohm resistor connected in series with a 7.7…

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Q: What is the peak current through a 1200 W microwave oven operating at 120-V AC?

A: Power of microwave (P) = 1200 W Operating voltage (Vrms) = 120 V