R= P " y In 2 Figure P26.50 Face A Face B

Q: A solar cell generates a potential difference of 0.10 V when a 500ohm resistor is connected across…

A: When the resistance R is in the circuit, the emf is Using ohm’s law, Thus, the equation for the…

Q: Two 1.50-V batteries—with their positive terminals in the same direction—are inserted in series into…

A: Given : ε1 = ε2 = 1.50 V  r1 = 0.255 Ω r2 = 0.153 Ω I = 600 mA = 0.6 A

Q: The resistances in Figure (a) and Figure (b) are all 9.0 0, and the batteries are ideal 38 V…

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Q: A flashlight uses batteries that add up to 1.5 V and has a power output of 0.53 W. (a) How much…

A: Voltage = 1.5 volts  Power output = 0.53 W

Q: The resistor R in Figure P18.58 dissipates 20 W of power.Determine the value of R.

A: Apply the Kirchhoff’s Law from the leftmost loop in the given FIG

Q: A long wire with a radius of 0.400 cm carries a current. The potential difference across a 3.00 m…

A: Given The radius of the wire is r=0.4 cm=0.4×10-2 m. The potential difference across 3 m long wire…

Q: Resistors v.B What is relationship between the resistances of objects A and B? RA = RB А: RA = 0.5 x…

A: The given values are, rA=RrB=2R

Q: Wire C and wire D are made from different materials and have length L. = LD-1.0 m (Figure B). The…

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Q: 6. Consider the combination of resistors shown in Figure P18.6. (a) Find the equivalent resistance…

A: a) 12 ohm and 6 ohm are parallel so equivalent of both = (12×6)/(12+6) = 4 ohm   4 ohm and 8 ohm are…

Q: A 0.040kΩ resistor carries a current 20 A. a. What is the potential difference in kV across this…

A: Using ohms law voltage drop across a resistor is V= IR where I is current passing through resistor…

Q: A long wire with a radius of 0.400 cm carries a current. The potential difference across a 3.40 m…

A: (a)  From Ohm’s law, Here, V, I and R represent the potential difference, the current flow in the…

Q: An oceanographer is studying how the ion concentration in sea water depends on depth. She does this…

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Q: The two segments of the wire shown have equal diameters and equal lengths but different…

A: Let I denote the current, ρ1 and ρ2 denote the resistivity of the materials, l denote the length of…

Q: At the left end. the resistivity is 2.25*10-8 Ω.m and the right side is 4.50*10-8m. (a) What is the…

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Q: light bulb resistance, = 120 Q is connected across a voltage source, V = 240 V. How many electrons…

A: Using Ohm's law find current in the wire: V = I*R I = V/R Given that: V = 240 V, and  R = Resistance…

Q: The resistances in Figure (a) and Figure (b) are all 7.8 Q, and the batteries are ideal 37 V…

A: Solutions are below.

Q: Figure shows the current-versus-potential-difference graph for a resistor.a. What is the resistance…

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Q: A 120 V potential difference is applied to a space heater whose resistance is 17 Q when hot. (a) At…

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Q: A 120 V potential difference is applied to a space heater whose resistance is 15 Q when hot. (a) At…

A: Given  Voltage V=120V Resistance R=15Ω

Q: A long wire with a radius of 0.400 cm carries a current. The potential difference across a 3.60 m…

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Q: (a) Find the equivalentresistance between pointsa and b in Figure P18.7.(b) Calculate the currentin…

A: (a). total resistance due to the parallel combination in the figure is

Q: The resistances in Figure (a) and Figure (b) are all 7.8 Q, and the batteries are ideal 37 V…

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Q: A conducting wire of radius 1 mm is carrying a uniformly distributed current of 50 A. If the…

A: Given: Current, I = 50 Aelectron density, n = 8.1*1028 electrons/m3Radius of wire, r = 1 mm…

Q: A current-carrying gold wire has a diameter of 0.85 mm. The electric field in the wire is 0.54 V/m.…

A: Given  E=0.54 v/m diameter(d)=0.85 mm resistivity=2.418 x 10-8. Ohm m

Q: (a) What is the hot resistance of a 28.0o w light bulb with a tungsten filament that runs on 120 V…

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Q: An aluminum rod with a square cross section is 1.3 m long and 5.2 mm on edge. (a) What is the…

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Q: Wire C and wire D are made from different materials and have length Lc = LD = 3.2 m. The resistivity…

A: length, LC=3.2 mlength, LD=3.2 mreisitivity, ρC=4.7×10-6Ωmradius, rC=Dc2=0.505 ×10-3mcross sectional…

Q: In the figure the ideal batteries have emfs E = 9.0 V and Ez = 0.500 E1, and the resistances are…

A: Given value--- E1 = 9 V. E2 = 0.5 E1 . each resistance = 3.38 ohm. We need to find--- What is the…

Q: Three resistors R1 = 82.1 A, Rz = 20.6 0, R3 = 70.0 0, and two batteries E1 = 40.0 V, and Ez = 366 V…

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Q: The rod in figure P27.24 is made of two materials. The figure is not drawn to scale. Each conductor…

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Q: 5 A machine part has a resistor X protruding from an opening in the side. This resistor is connected…

A: Given:-           Rab =2 ohm ,and circuit diagram

Q: A long wire with a radius of 0.450 cm carries a current. The potential difference across a 3.10 m…

A: The radius of the long wire is r= 0.450 cm= 0.45x10-2 m. The length of the wire section is L = 3.10…

Q: Two 1.50-V batteries—with their positive terminals in the same direction—are inserted in series into…

A: Total emf for the circuit can be obtained as The total internal resistance of the circuit can be…

Q: A1. A hair blower contains a heating element which has a resistance of 57 Ω. This heating element is…

A: Resistance, R = 57 Ω  Potential difference, V = 220 V

Q: 4 (a) What is the equivalent resistance between points A and B? (b) A 276 V emf is connected to the…

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Q: A metal has a resistivity of 1.26 x 10-8 0 m. What will the resistance of the following wires made…

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Q: An aluminum rod with a square cross-section is 2.6 m long and 5.3 mm on edge. (a) What is the…

A: Given data: Length of aluminum rod is, La=2.6 m. Edge length of aluminum rod is, a=5.3 mm=5.3×10-3…

Q: Material with uniform resistivity p is formed into a wedge as shown in Figure P26.50. Show that the…

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Q: A photoresistor, whose resistance decreases with light intensity, is connected in the circuit as…

A: Potential drop across the resistor VR=IR=VR+RpR

Q: The resistances in Figure (a) and Figure (b) are all 6.8 Q, and the batteries are ideal 23 V…

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Q: 2. A cylindrical metal rod is 1.90 m long and 5.50 mm in diameter. The resistance between its two…

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Q: Using Kirchhoff's rules (and given E = 70.1 V, E2 = 61.7 V, E3 = 79.6 V) calculate the following.…

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Q: a. What are conductivity and resistivity of a material? b. A capacitor can store an energy. Which…

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Q: As part of a class project you are given 0.900 g of nichrome and asked to fabricate a wire with…

A: Given :  Mass of nichrome, m = 0.9g = 0.9 x 10-3 kg (but only 95% is used) = 0.9 x 10-3 x (95/100) =…

Q: 4. A 12.0 V battery is connected to the resistor combination shown below. (a) How much current…

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Q: An aluminum rod with a square cross section is 1.8 m long and 6.2 mm on edge. (a) What is the…

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Q: The rod in Figure P27.24 is made of two materials. The fig- ure is not drawn to scale. Each…

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Q: Using Kirchhoff’s rules, (a) find the current in each resistorshown in Figure P18.25 and (b) find…

A: On applying Kirchhoff’s voltage law In loop abcf