A string of 27 identical Christmas tree lights are connected in series to a 120 V source. The string dissipates 75 W. What is the equivalent resistance of the light string? Answer in units of Ω What is the resistance of a single light? Answer in units of Ω. What power is dissipated in a single light? Answer in units of W One of the bulbs burns out. The lamp has a wire that shorts out the bulb filament when it burns out, dropping the resistance of the bulb to zero. What is the resistance R(new) of the light string now? Answer in units of Ω. Find the power P(new) dissipated by the string now. Answer in units of W.

Q: Houses in Europe run on 220 V instead of 120 V like here in the US.  A circuit in a European house…

A:

Q: In a circuit, a parallel combination of two 20-Ω and one 10-Ω resistors is connected in series with…

A: Given: The resistance is parallel is R1=20 Ω. The resistance connected parallel is R2=10 Ω. The…

Q: A combination of three resistors R,, R2 and R3 in series is connected across a voltage source Vr.…

A: (a) voltage source

Q: 46. A heart defibrillator is used to resuscitate an accident victim by discharging a capacitor…

A:

Q: of resistance R The figure shows an ideal battery of emf = 13 V, a resistor 6.3 , and an uncharged…

A:

Q: In an old house, the wires leading to a 120 V outlet have a total resistance of 0.45 \Omega . When…

A:

Q: A 6.0 x 10-6Farad capacitor is initially charged to 1.0 x 10²V and then connected across a 5.0 x 102…

A:

Q: Three resistors with resistances R1 = 11.5 ohm, R2 = 13.5 ohm, and R3 = 17.1 %3D ohm are is series…

A:

Q: A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to…

A:

Q: a. What voltage is involved in a 1.44-kW short circuit through a 0.100- resistance?

A:

Q: If each wire in #4 is connected to an identical battery, what is the relationship of the electric…

A:

Q: the emf source E = 2,9 V, of the curcuit shown in the figure has negligible internal resistance.The…

A: The time constant of a RC circuit is given by

Q: R Two uncharged capacitors and a resistor are connected as in the figure. If V = 5V,C = 2200 uF ve R…

A:

Q: In a RC circuit with power supply with an emf of 20 V. capacitance 3 uF, and resistance 1000 Q, the…

A: Given : Emf = 20 VCapacitance = 3 μF =3×10 -6 FResistance =1000 Ω

Q: A 60-cm-long heating wire is connected to a 120 V outlet. The wire dissipates 45 W. Part A What is…

A: Step 1: Step 2: Step 3:

Q: A string of 26 identical Christmas tree lights are connected in series to a 120 V source. The string…

A: Given Voltage of source is V= 120 V power dissipated in the string is P=65 W. The relation between…

Q: An 1800 WW toaster, a 1300 W electric frying pan, and a 90 W lamp are plugged into the same…

A:

Q: A physics student has a single-occupancy dorm room. The student has a small refrigerator that runs…

A: Given that:iref=2.5 AP1=100 WP2=60 WP3=3 WV=110 Vfor transmission line:d=9.266 mmL=17×2=34 kmV'=110…

Q: 1. A resistor with resistance R = 30 MQ is connected in series with a capacitor with capacitance 3…

A:

Q: Given the following home appliances(line voltage = 220 V) 500 watts refrigerator 250 watts mini…

A: Ans:- Image-1

Q: Q3. A- 0 to 220 V voltmeter has accuracy of 1.5 % of full scale reading. The theoretical (true)…

A:

Q: The maximum unknown emf that can be measured by a potentiometer circuit is 10 V. What will lead to…

A: A device which is used to compare the e.m.f. (electromotive force) of two cells is called…

Q: PS 2: A 12-volt battery of internal resistance r of 0.05 ohm is to be recharged u, source at the…

A:

Q: As shown, a single cell in a sample of tissue can be modeled by a circuit consisting of two…

A: After a long time, the capacitor gets fully charged. Thus, no current will flow from the capacitor…

Q: A digital clock has a 1.2x10 4 2 resistor and is connected to a 115 V source. How much power does…

A: Given  Resistance (R) = 1.2 × 104 Ω Source voltage ( V0 ) = 115 V  Power is given by :- Power (P) =…

Q: The following circuit has an ideal battery of potential difference 15.16V and R1 has a resistance of…

A: When circuit is hooked up for a long time then capacitor get fully charged and steady state will be…

Q: A stun gun or TASER is designed to put out a few seconds worth of electric pulses that impress a…

A: Given : voltage = V = 1200 V current = i = 3 mA = 0.003 Amp resistance = R = ?

Q: A capacitor that is initially uncharged is connected in series with a resistor and an emf source…

A: Given that,EMF source voltage : V = 110 (V)Current through the resistor : I = 6.6×10-5 (A)The time…

Q: In an old house, the wires leading to a 120 V outlet have a total resistance of 0.45 Ω . When you…

A:

Q: A resistor has four color bands: brown, orange, yellow, and Gold. What is its resistance? b.  A 60…

A: Here,  Brown → 1Orange →3Yellow → 105Gold → ±5% Therefore, the resistance is 130,000±5% ohm

Q: Two resistors of equal resistance R are connected in parallel across a cell with emf V. What is the…

A: Given : Two resistors of equal resistance R are connected in parallel across a cell with emf V.

Q: In the circuit below determine the unknown EMF (V) and the resistance R. 0.6 A 1.8 A (A) A 10 Ω 12 2…

A: The left hand circuit can be taken as loop 1 and the right hand circuit as loop 2 on applying KVL…

Q: 0. An electrie power station is producing 1,40 x 10 W of poser tat is to be A to na town located…

A:

Q: Consider the following RC circuit with a 5 MQ resistor and 1000 nF capacitor in series. The battery…

A:

Q: A 14 µF capacitor discharges through a 10 k2 resistor. What is the time constant of the circuit?…

A:

Q: Chapter 31, Problem 058 For the figure, find the value of resistance R which provides the maximum…

A: We have a cell with internal resistance connected to an external resistance.  Voltage = ξInternal…

Q: A 3 ampere current is flowing through a wire, with a long voltage of 5 volts. What is the power…

A: Given in question - Current(i) = 3 ampere                                   Voltage(V) = 5 volt To…

Q: string of 26 identical Christmas tree lights are connected in series to a 120 V source. The string…

A:

Q: D h

A: Given that-The resistance is 100 ΩPower dissipated is 2.0 WWe know that-Power dissipation, P= I2R…

Q: The peak current through a resistor is 2.0 A. What is the peak current ifa. The resistance R is…

A: