A person notices a mild shock if the current along a path through the thumb and index finger exceeds 90 μA. Compare the maximum possible voltage without shock across the thumb and index finger with a dry-skin resistance of 4.2 ✕ 105 Ω and a wet-skin resistance of 1,500 Ω.

Q: A battery with EMF of 49 V and an internal resistance, r = 0.27 ohms is connected to the load…

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Q: Three wires of the same diameter and length are made from three different metals: copper (ρ = 1.7 ×…

A: Given data:  The length and diameter of three wires are same The resistivity of materials ρcu = 1.7…

Q: A copper wire has a resistance of 0.480 Ω at 20.0°C, and an iron wire has a resistance of 0.519 Ω at…

A: We have given Resistance of copper wire (Rc)=0.480 ohmTemperature (T)=20°CResistance of Iron  wire…

Q: A copper wire has a resistance of 0.500Ω at 20.0ºC, and an iron wire has a resistance of 0.525Ω at…

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Q: A battery has ɛ= 30 V, and an internal resistance of 2.6 Q. What is the terminal voltage when it is…

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Q: A battery with EMF of 20 V and an internal resistance, r = 0.02 ohms is connected to the load…

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Q: Gold is the most ductile of all metals. For example, one gram of gold can be drawn into a wire 2.38…

A: The volume of a material is calculated by using the formula V=mρ , where m=0.001 kg is the mass and…

Q: A battery with EMF of 27 V and an internal resistance, r = 0.63 ohms is connected to the load…

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Q: A 0.686-meter-long wire has a cross-sectional area of 8.23 x 1 0-6 m2 and a resistance of 0.1 25 ohm…

A: Given: The cross-section area of the wire is 8.23x10-6 m2 The length of the wire is 0.686 m. The…

Q: Figure 1 shows an electric iron rated 2000 W, 240 V connected to a 240 V supply through a copper…

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Q: conductor has radius of 1.50 cm. How many centimeters of a material with 3.00 x 10^-2 Ω•m…

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Q: 3. A 10.0 m long RG-6 coaxial cable has an inner core of copper with a diameter of 7.112 mm. a.…

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Q: A PMMC instrument has internal resistance of 0.73 kQ and gives full scale deflection for 38 mA. The…

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Q: A person notices a mild shock if the current along a path through the thumb and index finger exceeds…

A: Given:  current,, i = 80 micro Ampere  resistance of dry skin, R = 4 x 105 ohm  resistance of wet…

Q: A copper wire has a resistance of 0.500 Ω at 20.0ºC , and an iron wire has a resistance of 0.525 Ω…

A: Given that, Resistance of copper wire is Rc=0.500 Ω at T0 = 20 oC Resistance of iron wire is…

Q: In the US, the conventional voltage seen in a recepticle (wall outlet) is 120 V. How many amperes is…

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Q: current of 0.080 A passing through a human body could be fatal. If you accidentally touched a 110 V…

A: Given V = 11O V I = 0.080 A

Q: In a tDCS treatment procedure, 0.85 mA of current flows through a patient’s brain when there is a…

A: The equivalent resistance between the electrodes is given by, R=VI Here, V is the potential…

Q: 1, = ? V = ? R, = 1.00 N Ev = 12.0 V 2 = ? R2 = 6.00 N R3 = 13.00 N E V3 = 7

A: Given data The potential difference of the battery is V = 12 V The magnitude of the resistance in…

Q: A person notices a mild shock if the current along apath through the thumb and index finger exceeds…

A: Maximum current to avoid the shock = 80 uADry skin resistance = 4×105 ΩWet skin resistance = 2 ×103…

Q: The resistance R of a copper wire at temperature T = 20◦C is R = 15 Ω. Estimate the resistance at T…

A: Given: The initial resistance of the wire is 15 Ω at 20 °C. The coefficient of the thermal expansion…

Q: copper wire 1mm in diameter and L m long has a resistance of 0.5 ohm. Find the resistance of another…

A: Given values:- Diameter of copper wire,(d)=1 mm=1 x 10-3 m ----(1) Length of copper wire,(l)=L m…

Q: A conductor is 6.00 cm long. If the material has a conductivity of 2.00 x 10^-2 Ω•m, then what must…

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Q: A copper wire has a resistance of 0.400 Ω at 20.0°C, and an iron wire has a resistance of 0.426 Ω at…

A: To determine: The temperature at which the resistance of the copper and iron will be equal   Given:…

Q: A coil of copper wire has a resistance of 62 Ω at room temperature of 24 °C. What will be its…

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Q: A metal wire has a resistance of 10.00 W at a temperature of 20°C. If the same wire has a resistance…

A: Given: The resistance of the wire at 20 oC is 10 w. The resistance of the wire at 90 oC is 10.55 w.…

Q: The potential difference across a resting neuron in the human body is about 63.0 mV and carries a…

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Q: The resistance of a copper conductor at 20C is 3Ω. Find the resistance value of this wire at -10 C…

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Q: Given this network, calculate the: Total resistance of the circuit b. Current in the circuit R,=…

A: a) Net resistance in series = sum of all individual resistance So, Net resistance for given circuit…

Q: nce of 0.49 Ω at 20.0°C, and an iron wire has a resistance of 0.57 Ω at the same temperature.  a)…

A: We know that we have given that the A copper wire has a resistance of 0.49 Ω at 20.0°C, and an iron…

Q: The radius of a large copper wire used for power transmission is 4.426 mm. Find the resistance of a…

A: Given data: Radius (r) = 4.426 mm Length (L) = 1.87 km Resistivity (ρ) = 1.72 × 10-8 Ωm Required:…

Q: Four 1.5 V cells are connected in series to a 12 ohm light-bulb. If the resulting current is 0.45 A,…

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Q: A metal wire has a length of 55.0 m and a diameter of 0.550 mm. The entire length of wire has a…

A: (given)      Length (l) of metal wire = 55 m Diameter (d) of metal wire = 0.550 mm…

Q: A coil is formed by winding 260 turns of insulated 16 gauge copper wire (diameter = 1.6 mm) in a…

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Q: lectrons pass through a light bulb every second if it is connected to a 3.00-volt circuit with a…

A: givenV=3 VR=12  Ωe=1.602×10-19 C

Q: Calculate the terminal voltage for a battery with an internal resistance of 0.950 SN and an emf of…

A: (A) Given Data : The internal resistance of the battery is given as r=0.950 Ω The emf of the battery…

Q: The resistance of a silver wire is 10 Ω at -15°C. At what temperature will the resistance be 12 Ω?…

A: We know,   given, R1=10ΩR2=12ΩT1=-15°CT2=?α=0.0038/°C

Q: A silver wire has a resistance of 2.3 Ω at 0 ᵒ C and a temperature coefficient of resistance of 3.75…

A: Initial resistance R1=2.3Ω final resistance R2=3.8Ω Initial temperature =0°C Coefficient of…

Q: In the given circuit, R₁= 6.00 ohms, R₂ = 3.00 ohms and R3 = 5.00 ohms. The battery has negligible…

A: Given: R1=6 ΩR2=3 ΩR3=5 Ω The current across R1 is 4 A.

Q: The temperature coefficient of resistance of a wire is 0.00125 per degree celcius. At 300K its…

A: Given  Temperature coefficient, TRC = 0.00125 /°C  At ,T1 = 300 K , Resistance, R1= 1 ohm for…

Q: What is the voltage in volts (V) across the 2.00 a resistor in the circuit below if an emf of 24 V…

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Q: maximum possible voltage without shock across the thumb and index finger with a dry-skin resistance…

A: using ohm's law . voltage V = I R where I is the current .   R is the resistance  therefore maximum…

Q: Two wires of equal length, one of aluminium and the other of iron, have the same resistance. Which…

A: Since the relative density of aluminium is less than that of iron, the mass of aluminium wire of the…

Q: The resistance of a coil of copper wire is 3.35 Q at 0°C. What is its resistance at 50°C. For copper…

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Q: A carbon resistor has a resistance of 18 Ohm at a temperature of 20degree C. What is its resistance…

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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.