If a rectangular solid made of carbon has sides of lengths a,2a, and 3a, to which faces would you connect the wiresfrom a battery so as to obtain (a) the least resistance, (b) thegreatest resistance?

Q: How much would you have to raisethe temperature of a copper wire(originally at20◦C) to increase its…

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Q: (a) Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a…

A: Given: The length of the wire is 20 m. The diameter of the wire is 0.15 mm. The resistance of the…

Q: A 165-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic…

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Q: Suppose you wish to fabricate a uniform wire out of 1.25 g of copper. If the wire is to have a…

A: Given: M=1.25 Density(D)=8940 Kg/m3 Resistivityρ=0.0171 Ωm To find: (a)Length of the uniform copper…

Q: Consider 3 resistors with resistances 0.95 × 102 Ω, 2.9 kΩ, and 3.6 kΩ. a) What would be their…

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Q: (b) Suppose node f in Figure 2 is connected to ground, and the elements in the circuit have the…

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Q: If the resistor is made of carbon, what will its resistance be when its temperature is increased by…

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Q: A 245-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic…

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Q: Choose the words that make each statement correct. (i) Whentwo or more resistors are connected in…

A: To understand it better, Let us assume two resistance such thatR1 = 5 ohmR2  = 3 ohm

Q: A wooden skewer and a piece of wire have the same dimensions: a length of 0.20 m and a…

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Q: The temperature coefficient of a certain conducting material is 4.78 × 10-3 (°C)-1. (a) At what…

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Q: (I) Three 45Ω lightbulbs and three 65Ω lightbulbs areconnected in series. (a) What is the total…

A: Three 45Ω light bulbs and three 65Ω light bulbs are connected in series

Q: The capacity of a storage battery, such as those used in automobile electrical systems, is rated in…

A: When a potential difference is present across a conductor, and a current passes through it, the…

Q: When you double the voltage across a certain material ordevice, you observe that the current…

A: According to Ohm's law, the current should vary with the voltage linearly. because, V= IR So by…

Q: Two resistors are wired to a battery. (a) In which arrangement, parallel or series, are the…

A: a) The potential difference across each resistor and across the equivalent resistance is equal in…

Q: A 205-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic…

A: Given data: The voltage is V=205 kV. The current is I=500 A The resistance is R=1.40×109 Ω

Q: Suppose a n electrical wire is replaced with one having every linear dimension doubled (i.e., the…

A: if length of 1st wire is l and radius is r after replaced the wire length is l1 =2l and radius r1…

Q: An ideal voltmeter V is connectedto a 2.0 Ω resistor and a battery withemf 5.0 V and internal…

A: Given: An ideal voltmeter V is connected to a 2.0 Ω resistor and a battery with emf 5.0 V and…

Q: What is the resistance of a 0.60-mm-long axon?

A: While the length substituted is correct, the area of the cross section is wrong. You only calculated…

Q: Suppose an electrical wire is replaced with one having every linear dimensiondoubled (i.e., the…

A: We know that the resistance of a wire is given by, R=ρLAwhere,ρ=resistivity of the wire  L= length…

Q: (a) During surgery, a current as small as 20.0 µA applied directly to the heart may cause…

A: OHM'S LAW is used to calculate voltage by using below formula  V=IR GIVEN: I=20μAR=300Ω Plug value…

Q: For some an application, it is important that the value of a resistance not change with temperature.…

A: Given: Total resistance of carbon & nichrome wire-wound resistor, Rt=4.7 kΩ Standard data:…

Q: (a) During surgery, a current as small as 20.0 μA applied directly to the heart may cause…

A: Current, I =  20 μA Resistance, R = 300 Ω

Q: A 175-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic…

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Q: (a) What will happen to the material’s resistivity if the resistance is increased?  (b) What will…

A: Concept Resistivity is dependent only on the composition of the material and the temperature.

Q: Suppose that you wish to apply a 0.25-V potential differencebetween two points on the human body.…

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Q: (a) Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a…

A: Given data:  Length (L) = 20.0 m Diameter (d) = 0.150 mm = 0.150 × 10-3 m Initial Resistance (Ro) =…

Q: Two diametrically opposite points of a metal ring are connected to two terminals of the left gap of…

A: To find-Resistance of wire bent in shape of ring (x)=?Given-Resistance in right gap (R)=15…

Q: Suppose a circuit contains an electromotive force (a battery) that produces a voltage of E(t) volts…

A: We can solve this using differential equation

Q: Two resistors, one having a resistance of 900 kΩ , are connected in series to produce a total…

A: (a) When resistors are connected in series, there resistances adds up Rnet=R1+R2 Rearrange to find…

Q: Suppose you wish to fabricate a uniform wire from 1.30 g of copper. The wire is to have a resistance…

A: The expression for the area of the wire,

Q: An electron beam consist of 1016 electrons passing through a given cross section n one minute. (a)…

A: Given value--- An electron beam consist of 1016 electrons passing through a given cross section n…

Q: The emf of a battery is E = 12 V . When the battery delivers a current of 1 A to a load, the…

A: Given: The emf of the battery is 12 V. The terminal voltage is 10 V. The current in the circuit is 1…

Q: A Nichrome heating element in an oven has a resistanceof 8.0 Ω at 20.0°C. (a) What is its resistance…

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Q: If we stretch a copper rod, making it 0.1% longer, a) How much would its resistance vary? b) What…

A: Given percentage change in length of wire is 0.1% longer. We know the resistance of a wire of…

Q: A block of weakly-conducting material with conductivity sigma has two pieces of metal embedded…

A: Given that: The capacitance of the capacitor isC. The conductivity will be σ. The resistance is R.…