For a heater rated at 4 kW and 220 V, calculate: (i) the current;

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Q: Given that the delivered power to a resistor is equal to P when the current flowing in the resistor…

A: Given data: Current I =3.2I0

Q: Given that the delivered power to a resistor is equal to P when the current flowing in the resistor…

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Q: How much electrical energy (in kilowatt hours) would a 45.0 W light bulb use in 60.0 days if left on…

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Q: A current of 1.78 A fHows through a 58.2 2 resistor for 9.1 min. How much heat was generated by the…

A: Given data:  Current (I) = 1.78 A Resistance (R) = 58.2 Ω Time (t) = 9.1 min Required: Heat…

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Q: Several 50- ohm resistors are to be connected so that a current of 11 A flows from a 110-V Source.…

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Q: If the resistance of wires is taken into concideration, what will happen to the readings of the…

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Q: A portable galvanometer is given a full-scale deflection by a current of 5.00 mA. If the resistance…

A: Given Data: Full-scale deflection current, Galvanometer resistance,   Max. measuring voltage,…

Q: Refer to the figure and the discussion of lights dimming when a heavy appliance comes on. (a) Given…

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Q: Calculate the resistance of a carbon rod when at 60°C if its resistance at 0°C is 0.0180.

A: Resistance at temperature T is given by:- R = R0 [1+α (Tf -Ti)] Here, R = Resistance at final…

Q: Of what material is a resistor made if its resistance is 40.0% greater at 100°C than at 20.0°C?

A: Given, Resistance is 40.0% greater at 100°C than at 20.0°C Let T1=20 c T2=100c Resistance at 20c=Ro…

Q: The power drawn by a resistive coil made of copper wire is 220 W at 100 V and 20 °C. Calculatethe…

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Q: What is the resistance of an automobile headlight through which 2.50 A flows when 12.0 V is applied…

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Q: Find ve(t) in the circuit of Fig.7 if v,(t) = 2e-3tu(t).

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Q: Given that the delivered power to a resistor is equal to P when the current flowing in the resistor…

A: Option c = 146.4 P    is the answer

Q: What could happen to the drift velocity of the electrons in awire and to the current in the wire if…

A: Given:Let, the area of cross-section of the wire = ACharge = qCurrent = IResistance = R

Q: If the resistance of pure iron is 0.10 Ω at 20oC and the temperature coefficient of iron is 5.0 x…

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Q: Given that the delivered power to a resistor is equal to P when the current flowing in the resistor…

A: We have to use some basic formula here.

Q: (II) Three 1.7 -KΩ resistors can be connected together infour different ways, making combinations of…

A: The first case of the three resistors connected together in series combination. The net resistance…

Q: The equivalent resistance of the resistors below is about: 6Ω 9Ω 3Ω 50 ww

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Q: The resistance of a silver wire is 0.30 at 20°C, at what temperature will its resistar 5% if its…

A: Given data: Initial resistance Ri=0.1 Ω Final resistance Rf=25100×0.3=0.075 Ω Temperature T1=20° C…

Q: The heating element of a coffeemaker operates at 120. Vand carries a current of 2.00 A. Assuming the…

A: Expression to calculate the amount of heat energy is,

Q: - If the heater wire is replaced by a wire with lower resistance, is the time required to heat the…

A: (c) decreased If the heater wire is replaced by a wire with lower resistance, is the time required…

Q: - A resistor carries a current of 25 A when the potential difference across it is 7 V. What is the…

A: Please note : As per answering guidelines I can answer the first question only. Since, this is not a…

Q: A hair dryer draws 9.3 A when plugged into a 120-V line. How much charge passes through it in 19…

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Q: The lights on a car is inadvertently left on. They dissipate 95.0 W. About how long will it take to…

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Q: Compute the electrical energy consumed in Joules if a toaster of 50 W is used 2000 seconds ?

A: Introduction :  In this question we are provided with value of  power and time.  with these data we…

Q: Refer to Figure 10.17 and the discussion of lights dimming when a heavy appliance comes on. (a)…

A: It is given that,

Q: Given that the delivered power to a resistor is equal to P when the current flowing in the resistor…

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Q: An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be?

A: Given : Rating Voltage = 220 V Rating Power = 100 W Finding the resistance by formula : R =…

Q: The power rating of the heater a Nichrome wire that has a total resistance of (8 Q) and carried a…

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Q: At wha temperature would be resistance of a copper conductor be double its resistance at zero degree…

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Q: Of what material is a resistor made if its resistance is 40.0% greater at 100.0 °C than at 20.0 °C ?

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Q: Would your headlights dim when you start your car’s engine if the wires in your automobile were…

A: The car battery has low resistance, when it is switched on a large current will flow and this…

Q: In the figure, the total resistance is 10kΩ, and the battery's emf is 20.0 V.If the time constant is…

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Q: double the resistance of

A: When we know the length and the cross-sectional area of a conductor, the electrical resistance of a…

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.