R V E R IR Figure 27.1 (a) Circuit diagram of a source of emf ɛ (in this case, a battery), of internal resistance r, connected to an external resistor of resistance R. (b) Graphical representation showing how the electric potential changes as the circuit in (a) is traversed clockwise.

Q: What must the emf E inFig. be in order for the currentthrough the 7.00 Ω resistor to be 1.80 A?Each…

A: …

Q: A 300Ω resistor and a 100Ω resistor are connected in series, and this combination is subjected to a…

A: Given : R1=300 ohm R2=100 ohm V=60 V V1=43.5 In this question we have to find the resistance of the…

Q: A Battery of emf 4V of internal resistance in is connected parallel with another battery of emf 11 &…

A: We need to compute- Current through external resistance (I)=? The data given as- E1=4 VE2=1 Vr1=1…

Q: A 10.0 Ω 5.00 Ω ww R V R www eal ammeter eal voltmeter AV + + 4.50 V eal ammeter (Give your answer…

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Q: (a) find the equivalent resistance between points A and B for the combination in the figure How is…

A: Given Data- Resistances are arranged as shown in fig. Current across a to b.    I= 5 A.

Q: What shunt resistance is required to make mA, zu galvanometer into an ammeter with a range 0.0 mA?

A: Shunt resistance is defined as the slope of the dark current versus applied voltage to the detector.

Q: A IM resistor is connected in series with a 10uF capacitor and a 10.0V battery of negligible…

A: Given that, Capacitor Voltage V = 10.0 V Resistance After a time,

Q: A power supply maintains a potential difference of 64.3 V64.3 V across a 2950 Ω2950 Ω resistor. What…

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Q: 42.0 2 33.0 2 61.0 2 75.0 2 25.0 2 14.52

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Q: A heart defibrillator being used on a patient has an RC time constant of 11.0 ms due to the…

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Q: Resistance of potentiometer wire is 1 per meter. A Daniel cell of e.m.f. 1.08 V balances at 216 cm…

A: We have to find-1 Current through wire I=?(2) Balancing length l2=?Given that-Resistance per meter=1…

Q: A cauterizer, used to stop bleeding in surgery, puts out 1.76 mA at 15.5 kV. (a) What is its power…

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Q: Resistance of potentiometer wire is 1 № per meter. A Daniel cell of e.m.f. 1.08 V balances at 216 cm…

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Q: atient's body and the capacitance of the defibrillator. Randomized Variables τ = 11.5 ms C =…

A: Time constant (T) = 11.5 ms = 0.0115 s C = 7.5μF V = 15 kV = 15000 volts

Q: Consider the circuit shown in the figure below, where L- 5.30 mH and R, - 455 0. The switch 5 can be…

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Q: The power goes out in your dorm. You want to run a spaceheater that uses 1500 Watts of power at a…

A: Given data The capacity of the space heater is P = 1500 W The potential difference is V = 120 V The…

Q: A wire of initial length L0 and radius r0 has a measured resistance of 2.0 Ω. The wire is drawn…

A: Given: The intial length is Lo. The radius of the wire is ro. The final radius is 0.27ro. The…

Q: Find the power (in W) dissipated in each of these extension cords.   (a) an extension cord having a…

A: Power dissipation:  When the current flows through the electronic device or the conductor the energy…

Q: Need help with part b please !!!!!!   (a) What is the hot resistance (in Ω) of a 29 W light bulb…

A: The following data are given: Operating Resistance, R0= 496.5 Ω Operating Temperature, T0=2700°C…

Q: A wire of resistance 5.0 ohm is connected to a battery whose emf D is 2.0 Vand whose internal…

A: Given that:-Resistance, R=5ΩEMF, ε=2 VoltInternal resistance, Ri=1ΩTime, t=2 min a) Energy…

Q: A total resistance of 3.27 Q is to be produced by connecting an unknown resistance to a 12.06 a…

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Q: If the effort arm is 20% closer than the point of insertion which is 0.12m from the axis and the…

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Q: A capacitor charged initially to 0.32 mC is connected across a resistor, and 2.0 s later its charge…

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Q: During the manufacture of wire, the cross section can be decreased, and the length increased, by…

A: Resistance of any wire depends on its length and Cross sectional Area as,                      R =…

Q: A wire of resistance 5.0 ohm is connected to a battery whose emf O is 2.0 Vand whose internal…

A: Solution attached in the photo

Q: The four resistances are R1 = 4.9 Ohm, R2 = 7.1 Ohm, R3 = 7.2 Ohm, and R4 = 9.2 Ohm. The power…

A: Given Data Resistance of the four resistors are R1=4.9 Ω, R2=7.1 Ω, R3=7.2 Ω and R4=9.2 Ω Potential…

Q: Thermal energy is produced in a resistor at a rate of 112 W when the current is 3.63 A. What is the…

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Q: A 6μF capacitor that is initially uncharged is connected in series with a resistor and an emf source…

A: Given: capacitance, C = 6μF Emf, V = 40 V Electrical energy rate, P = 20 W Time constant, τ = 30 μs…

Q: A 40 W light bulb is connected to the 220 V mains supply. Assuming that the bulb runs at its rated…

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Q: A battery has ab emf= 15 volt and internal resistance of r 1.34 N. Its terminal s are connected to…

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Q: Problem 4:  Find the power dissipated (in W) in each of the following extension cords:   Part (a)…

A: The power dissipated,   P = I2 × R  Where , The current = I                The resistance = R

Q: Calculate the effective resistance (in ko) of a pocket calculator that has a 2.10 V battery and…

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Q: What shunt resistance is required to make the 1.00 mA, zu Q galvanometer into an ammeter with a…

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Q: The RC charging circuit in a camera flash unit has a voltage source of 265 V and a capacitance of…

A: (a) Find the time constant of the circuit. Q=Q01-e-tτ0.90Q0=Q01-e-tτ0.90=1-e-tτ0.90-1=-e-tτ Solve…