(II) Eight 7.0-W Christmas tree lights are connected inseries to each other and to a 120-V source. What is theresistance of each bulb?

Q: A flashlight bulb rated at 2.0 W and 3.0 V is operated by a 9.0-V battery. To light the bulb at its…

A: The current across the bulb can be obtained as P=VbulbII=PVbulb=2.0 W3.0 V=0.67A

Q: 10.0 N 20.0 N ww- 60.0 N -ww- 60.0 N 2.00 A 30.0 0 ww 5.0 Ω -5.0 V 10.0 V 15.0 N E 5.00 w - ww 20.0…

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Q: If the potential difference across a resistor is doubled: only the current is doubled both the…

A:

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

A: In parallel current divides and voltage remain same. As we turn on the car, the starter requires…

Q: which one of the followings are true in a electric circut 1-ampermeter has a huge inner resistence…

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Q: When working with high-power electric circuits, it is advised that whenever possible, you work…

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Q: If Req = 50 2 in the circuit in Fig. 2.101, find R. 10Ω 30 Ω ww Rea 12 Q 12 Q 12Ω 60 2 ww ww ww ww

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Q: (II) The capacitance of a portion of a circuit is to be reducedfrom 2900 pF to 1200 pF. What…

A: C1=2900 pFC=1200 pFx=Capacitor of unknown capacitance

Q: A number of light bulbs are to be connected to a battery. Which will provide more overall…

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Q: If the current through a resistor is decreased by a factor of 4, how does this affect the power…

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Q: (II) In Fig. 19–69 (same as Fig. 19–20a), the total resistance is 15.0 kN, and the battery's emf is…

A: Given: The total resistance of the circuit is R=15 kΩ. The emf of the batter is Vmax=24 V. The time…

Q: A power supply has a fixed output voltage of 12.0 V, but you need Vr = 3.5 V output for an…

A: V = 12 V  R1 = 14.5 ohm  VT = 3.5 V

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

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Q: (II) Electrocardiographs are often connected as shown in Fig. 19–68. The lead wires to the legs are…

A: Given: The time constant is 3.0 s. The capacitance is 3.0 μF.

Q: 1. In which circuits shown in Fig. 19–40 are resistors connected in series? (a) (b) w ww (c) (d)…

A: The resistances are treated as connected in series when the same current flows through the…

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: What special relationship can be observed if you have a number of resistors with the same ohmic…

A: Given: What special relationship can be observed if you have a number of resistors with the same…

Q: A light bulb marked "60 W [at] 120 V" is screwed into a socket at one end of a long extension cord…

A: Given data The Light bulb marked at 60 W at 120 V. The resistance of the conductor is R = 0.801 Ω.…

Q: If The pot emtial aliff era ve nce bet wween the t of m electric motor Ls 245V is flowing.hrooth…

A: Given  Potential difference between the terminals of electric motor V = 245 V Electric current  I =…

Q: (III) Suppose 2.0 MW is to arrive at a large shopping mallover two 0.100Ω lines. Estimate how much…

A: Given data: Input power, P=2 MW =2×106 W  Equivalent resistance, R=0.100+0.100=0.200 Ω Voltage,…

Q: In a certain stereo system, each speaker has a resistance of 4.00 Ω. The system is rated at 60.0 W…

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Q: Can Kirchhoff’s rules be applied to simple series and parallel circuits or are they restricted for…

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Q: -37 In Fig. 27-48, the resistances are R, = 2.00 N, R, = 5.00 N, and the battery is ideal. What…

A: Given,

Q: If the current through a resistor is increased by a factor of 4, how does this affect the power…

A: Power through a circuit of resistance R and current I is given by,  P=I2R Given : Current is…

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: Different lamps might have batteries connected in either of the two arrangements shown in Fig.…

A: (a) here the two bulbs are connected in series, so the voltage to the bulb increases and the…

Q: - (II) A bird stands on a dc electric transmission line carrying 4100 A (Fig. 18–34). The line has…

A: Current, I = 4100 A  Resistance, R = 2.5 x 10-5 ohm

Q: Four 60-W 110-V bulbs are to be operated from a 230-V source. Determine the value of the resistance…

A: Power of each bulb = 60 W Voltage across each bulb = 110 V Voltage of the source = 230 V

Q: Why is it more dangerous to turn on an electric appliancewhen you are standing outside in bare feet…

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Q: As the load resistance in parallel connection is increased, what happens to current? How about the…

A: Concept:- The given problem can be resolved using the concept of Ohm's law. According to Ohm's law,…