a b Resistive Material

Q: An electric space heater has a Nichrome heating element with a resistance of 9 N at 20°C. When 120 V…

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Q: A potential difference of 10 V is found to produce a current of 0.40 A in a 3.4 m length of wire…

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Q: Three resistors are connected in parallel to a 69.5 V battery: R1 = 8.18 N, R2 = 8.01 N and R3 =…

A: Equivalent resistance in the parallel circuit is, 1R=1R1+1R2+1R3

Q: What is the total resistance in the following cable? It is iron wire with resistivity of 9.7x10-⁸…

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Q: The nichrome unit (p = 660 ohm-CM per ft) in a toaster has a resistance of 24 ohm. What is the…

A: Given that:- Specific resistance of nichrome=660 ohm-cmil per ft

Q: An iron wire has a cross-sectional area egual to 9.50 x 10-6 m2. Carry out the following steps to…

A: (a) From the periodic table, the molar mass of Iron is M = 55.85g/mol = 55.85 x 10-3 kg/mol

Q: The graph below represents the relationship between the resistance and the length of a wire of a…

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Q: A wire of length L and cross-sectional area A has a resistivity p. Which of the following formulas…

A: Given : Length of a wire = L Cross-sectional area = A Resistivity = ρ

Q: A sequence of potential differences V is applied across a wire (diameter = 0.32 mm, length = 11 cm)…

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Q: ,E, = 61.8 V, and E, = 79.8 V.) Using Kirchhoff's rules, find the following. (E, = 71.0 4.00 kN d b.…

A: Given-  ε1= 71.0 V ,  ε2 = 61.8 V   , ε3 = 79.8 V R1= 2 kΩ = 2 x 103 Ω  R2= 3 kΩ = 3 x 103 Ω  R3= 4…

Q: To what temperature must you raise a gold wire (c = 0.0034), originally at 20.0°C, to double its…

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Q: Figure given below shows a resistor of resistance R = 6.000 connected to an ideal battery of emf E =…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: Using Kirchhoff's rules, find the following. (E, = 70.4 V, E2 = 62.0 V, and Ez = 79.0 V.) 4.00 kN E…

A: Current through E1, upward = i1 Current through E2, downward = i2 Current through E3, upward = i3…

Q: A 16.0-mm length of wire consists of 7.0 mm of copper followed by 9.0 mm of aluminum, both of…

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Q: The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in diameter is 0.830 ohms at…

A: Given, Length of copper wire = 50 m Diameter = 1.15 mm Resistance = 0.830 ohms at 20 degrees

Q: A 14.0 gauge copper wire of diameter 1.628 mm carries a current of 12.5 mA . What is the…

A: Length of copper wire (L) = 2 m resistivity of copper wire (ρ) = 1.72×10-8 ohm-meter diameter of…

Q: A cubic resistor R of side length L=2 m and resistivity p=1.5×10-6 Qm connected to a battery ɛ= 1.35…

A: Given a cubic resistor R of side length L=2 m and resistivity ρ=1.5×10-6 Ω.m connected to a battery…

Q: A resistor and a capacitor are connected in series to a source of emf. While the current is 0.3 A…

A: Given that, Resistance, R = 90 ohm Capacitance, C = 3μF Emf, ε=50 V When the capacitor charges,…

Q: Using Kirchhoff's rules, find the following. (E, = 71.0 V, E, = 61.8 V, and Ez = 79.8 V.) 4.00 kN d…

A: ε1 = 71.0 V ε2 = 61.8 V ε3 = 79.8 V R1 = 2.00 kΩ = 2.00 x 10 3 Ω R2 = 3.00 kΩ = 3.00 x 10 3 Ω R3 =…

Q: An aluminum wire with a circular cross-section has a mass of 1.45 g and a resistance of 0.630 Ω. At…

A: Resistance of wire of area of cross section A and length l is given as R= ρl/A.

Q: An aluminium rod with square cross section is 1.3 m long and 3.8 mm on edge ) What is the resistance…

A: (given)           Length (L) of the rod = 1.3 m                           l = 3.8 mm = 3.8 × 10-3 m…

Q: A gold wire carries 22 A of current with a drift velocity of 4.3 × 10-3 m/s. Assume there is one…

A: Since you have asked multiple questions, we will answer you the first question. Kindly repost the…

Q: Three resistors of values R, 2R and 3R are connected together in series and in parallel with a cell…

A: Three resistors: R, 2R and 3R. All of the resistors are connected in series with each other. This…

Q: 1. (10') (a) A resistor has four color bands brown, orange, yellow, and Gold. What is its…

A: NOTE: According to guidelines, I can give solution to first three questions. If you need help with…

Q: What is the resistance of (a) A 1.8-mm-long gold wire that is 0.10 mm in diameter? Express your…

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Q: A coil of Nichrome wire is 25.0 m long. The wire has a diameter of 0.400 mm and is at 20.0°C. If it…

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Q: The resistance and the magnitude of the current depend on the path that the current takes. The…

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Q: A current of 2 A flows through a gold wire with a radius of 3 cm and a length of 15 m. There are…

A: Given data:  Current (I) = 2 A Radius (r) = 3 cm = 0.03 m Free electron density (n) = 3.50×1020…

Q: The graph below represents the relationship between the resistance and the length of a wire of a…

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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: Consider a thin aluminum wire with diameter d= 6 mm The resistivity of aluminum is 2.65x10-8 Q.m.…

A: Recall R=ρL/A

Q: An electric flat iron draws a current of 15 A when connected to a 110 V line.…

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Q: A gold wire with a circular cross-section has a mass of 1.30 g and a resistance of 0.770 Ω. At 20°C,…

A: Given data: Mass of the gold wire is, m= 1.30 g The resistance of the gold wire is, R = 0.770 Ω The…

Q: B. Given the table, solve for the following: a. Find the resistance of a 10 m long copper wire coil…

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Q: The emf of the battery in the circuit shown above is 10.0V, while the resistance of each resistor…

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Q: Wires A and B, having equal lengths of 40.0 m and equal diameters of 2.94 mm, are connected in…

A: Given length of wire A = length of wire B = 40 m diameter of wire A = diameter of wire B = 2.94 mm…

Q: A resistor is constructed of a carbon rod that has a uniform cross-sectional area of 5.00 mm². When…

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Q: Consider a resistor in the form of a cylindrical wire of length L, radius r and resistance R. If the…

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Q: A 10-gauge copper wire has a cross-sectional area A = 5.26 mm2 and carries a current of I = 5.00 A .…

A: Given: The density of copper is ρ=89.5 g/cm3. The molar mass of copper is M=63.5 g. The cross…

Q: Using Kirchhoff's rules, find the following. (E, = 71.0 V, E, = 61.8 V, and Ez = 79.8 V.) 4.00 kN d…

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Q: 4. Two resistors are connected in parallel to a 220 V line. R1=50 ohms and R2=100 ohms. What is the…

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Q: Three resistors of values R, 2R and 3R are connected together in series and in parallel with a cell…

A: Given, Three resistors of values R, 2R and 3R are connected together in series and in parallel with…

Q: A car battery with a 12 V emf and an internal resistance of 0.040 is being charged with a current of…

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Q: A cylindrical metallic wire with a resistance of 12 Ω has a cross-sectional area of 4.0 mm2 and a…

A: Initially, Resistance of cylindrical metalic wire , R1 = 12 ohm  Cross sectional area, A1 = 4 mm2…

Q: What is the current in the element of an electric clothes dryer with a resistance of 7.4 Ω when it…

A: (given)              Resistance (R)= 7.4 Ω Operating voltage (V)= 240 V                      Voltage…

Q: gold wire carries 24.5 A of current with a drift velocity of 2.5 × 10-3 m/s. Assume there is one…

A: Given Current I = 24.5 A Drift velocity vd = 2.5 × 10-3 m/s Density =1.93 × 104 kg/m3  Mmolecular…

Q: You have a 100 meter long hollow square copper wire that has a side length of 5mm. The diameter of…

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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.