A wire is stretched, its volume and mass remaining constant, so that it is twice as long but thinner than before being stretched. By what factor does the resistance of the wire change? no change doubled tripled quadrupled

Q: The power rating of a light bulb (such as a100 W bulb) is the power it dissipates when connected…

A: The power dissipated via a light bulb is given by, P = VI Using Ohm's law V = IR P = V2R where, I is…

Q: Question 3 For the following circuit, calculate the current on and the voltage dropped by each…

A: Here 8Ω and 4Ω are connected in series then the equivalent resistance is          R'=8Ω+4ΩR'=12Ω…

Q: Find the currents flowing in the circult in the figure below. (Assume the resistances are R₁ = 10 ,…

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Q: Problem 1a What is the equivalent resistance of the following circuit? 5.0 N 2.5 N 10 Ω ww ww ww- 10…

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Q: A resistor R1 is conneded across the teminals of a batery. In Ammeter following cases, explain how…

A: Given:  (a)  Voltage is V, resistance is R, current is I.  (b)  number of electron, n = 5.4 x 108…

Q: 8. For the circuit shown in figure, find the current through the resistor Rs? Find the potential…

A: Given:Resistance, R1 = 3.5 Ω                      R2 = 4.5 Ω                      R3 = 3 Ω…

Q: For the circuit shown below, find the current through the 5.0 O resistor when Sj is closed and S2 is…

A: Given data: The resistance are, R1=2 ΩR2=5 ΩR3=1 ΩR4=3 Ω Voltage of battery is, V=3 V

Q: For the circuit shown below, calculate the total resistance as seen by the source. 100 0 ww ww 220 0…

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Q: Problem 2: Aluminum wire of length L and resistance R is uniformly stretched to a length 2L. The new…

A: Given: Length of original wire is L. Resistance of original wire is R. Length of new wire is 2L.

Q: 18 For the circuit shown in the figure, what current does the ideal ammeter read in (mA)? 90.00 100…

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Q: What is the power dissipated by the circuit? Round off to three decimal places. R, = 50 R, = 70 R, =…

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Q: 2. For the circuit shown in the figure below this problem: (a) Determine the equivalent resistance…

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Q: 10 Q 25 Q + 60 V V 20 Q 50 Figure 3

A: In the given figure we have to find maximum power that can delivered to the variable resistor R.…

Q: What is the value of the equivalent resistance, Rab? Express your answer in ΚΩ. 9 kN, 9 kN 9 kN 9…

A: Solution-

Q: Two points 0.0001 m apart in a micro-circuit are to be joined by a silver conductor. Determine the…

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Q: 1000 m R 3000 m ㅔ 1.5V 500

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Q: If you want to find the amount of power dissipated by all four resistors in a circuit, you would…

A: In series circuit P=I2R1+I2R2+I2R3+I2R4 P=I2(R1+R2+R3+R4) P=I2(R1+R2+R3+R4) P=I2(Req)  In in series…

Q: In the circuit below, if R = 10 N , then the current passing through the resistor 2R is equal to: R…

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Q: =18.1 μΩ.) Find the equivalent resistance of the combination of resistors shown in the figure below.…

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Q: | Problem 11: In the three-resistor circuit diagram shown here R1 = 5.5 0, R2 = 12 0, R3 = 9.5 2,…

A: Given: The resistance R1 is 5.5 Ω. The resistance R2 is 12 Ω. The resistance R3 is 9.5 Ω.

Q: The current ia in the circuit shown in the figure is 4.0 mA . (Figure 1) {2 ΚΩ 1 ΚΩ 3 ΚΩ www Σ4 ΚΩ

A: Given, The current,  ia=4mAia=4×10-3A Now, -2i0+1×ia+4×ia+3×ia=02i0=8ia2i0=8×4i0=16mA

Q: What is the effective resistance of a 100 e resistor in series with another 100 2 resistor? 50 2 100…

A: Answer (1) --------. 200 ohm R1 = 100 ohm  R2 = 100 ohm  Effective Resistance Rs = R1 + R2…

Q: In the given circuit below, determine the total resistance. 24V www 12A ww

A: To answer the problem, we will first simplify the circuit and use relevant formula. The details are…

Q: The resistance of a copper wire is originally 16 Q. What is the resistance of the same copper wire…

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Q: For the circuit shown in the Figure, determine the current through the 402 resistor. ww RA • 20 Ω R₁…

A: Given,  Circuit    We need to calculate,  Current through the 40 ohm resistor =?

Q: In the circuit shown, how much power is consumed by the resistor? V=6V 400 0.9 W O 0.3 W O 0.7 W 0.5…

A: Given data The potential difference across the circuit is V = 6 V The magnitude of the resistance is…

Q: In the circuit shown, E2=1.98 E, and all resistors have the same resistance. Find I2/1 E2 I2 R

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Q: A Wheatstone Bridge is used to determine the value of an unknown resistance R4 as shown in the…

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Q: The resistance of a 5 m length of wire is 600 N Determine (a) the resistance of an 8 m length of the…

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Q: ‘n’ cells have emf ‘e’ and internal resistance ‘r’ and connected to an external resistance ‘R’. They…

A: Option

Q: The following circuit consists of identical resistors whose resistance is 5.0 Q connected to a 40 V…

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Q: Consider the following circuit. b❤ X R 90.0 Ω www 90.0 Ω When the switch S in the circuit of the…

A: when switch S is open:   10 ohms and 90 ohms are in series in both the brances   then net resistance…

Q: A cylindrical wire has a radius r and length L. If both r and and length L are doubled, the…

A: Resistance: The resistance of a specific wire is directly proportional to the length of the…

Q: For the circuit shown below, find equivalent resistance and the current flow through the 5.0 N…

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Q: Sheila is trying to write an equation for the equivalent resistance for the following circuit. She…

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.