The high resistivity of dry skin, about 2×105Ω⋅m2×105Ω⋅m, combined with the 1.5 mmmm thickness of the skin on your palm can limit the flow of current deeper into tissues of the body. Suppose a worker accidentally places his palm against an electrified panel. The palm of an adult is approximately a 9cm×9cm9cm×9cm square What is the approximate resistance of the worker's palm?

Q: Consider a portion of a cell membrane that has thickness of 7.50 nm and 1.3 um x 1.3 um in area. A…

A: Given: Thickness, t=7.50 nm Dimension = 1.3 μm × 1.3 μm Potential difference V= 92.6 V Resistivity…

Q: If you touch the two terminals of a power supply with your two fingertips on opposite hands, the…

A: maximum safe current = potential difference ,Resistance ,

Q: Wire C and wire D are made from different materials and have length LC = LD = 3.6 m. The resistivity…

A: Given, Wire C and wire D have length 3.6 m and diameter 1.06 mm and 0.73mm respectvily

Q: A 22 gauge aluminum wire is connected in series to a 30 gauge copper wire. Each of the wires is 0.75…

A: Answer the following question is

Q: Wire C and wire D are made from different materials and have length LC = LD = 4.3 m. The resistivity…

A: Since you have posted questions with multiple sub-parts, we will solve the first three for you. To…

Q: A certain fuse "blows" if the current in it exceeds 1.0 A. This fuse melts with a current density of…

A:

Q: Under the influence of a constant E field of 700.0 N/C; 4.53* 1016 electrons pass through a 5.00 cm…

A:

Q: The average bulk resistivity of the human body (apart from surface resistance of the skin) is about…

A:

Q: A block of carbon is 3.6 cm long and has a square cross-sectional area with sides of 3 cm. A…

A: 1) The required resistance is,

Q: Conducting Pipe: A pair of students working in a lab decide to use the plumbing to send electrical…

A:

Q: In a wire with a 2.63 mm² cross-sectional area, 5.51 × 1020 electrons flow past any point during…

A: Given data:  Cross sectional area (A) = 2.63 mm2 = 2.63×10-6 m2 Number of electrons (n) = 5.51×1020…

Q: Given is a current-versus-potential-difference graph for a cylinder. What is the cylinder’s…

A:

Q: A) A long wire with a radius of 0.450 cm carries a current. The potential difference across a 3.60 m…

A: Current in the circuit = Potential difference/ Resistance of wire. Using relation between resistance…

Q: Variations in the resistivity of blood can give valuable clues about changes in various properties…

A: Given data:  Diameter (d) = 1.5 mm Length (L) = 5.5 cm Voltage (V) = 9.0 V Current (I) = 220 μA…

Q: Consider a portion of a cell membrane that has a thickness of 7.50 nm and 1.2 um x 1.2 um in area. A…

A:

Q: There is a potential difference of 0.90 V between the ends of a 20 cm long graphite rod that has a…

A:

Q: A wire is 100.0 m long and 0.800 mm in diameter. The first x meters of the wire is made of copper…

A: Given: The length of the wire is 100 m. The diameter of the wire is 0.800 mm. The potential…

Q: There is a potential difference of 1.6 V between the ends of a 10 cm long graphite rod that has a…

A:

Q: There is a potential difference of 1.3 V between the ends of a 10 cm long graphite rod that has a…

A: Given  Potential difference between the ends is ∆V=1.3 V Length of the rod is l=10 cm=0.10m…

Q: A 150 W heating coil (like a light bulb) is designed to operate from 125 V. The coil is made from a…

A:

Q: Giant electric eels can deliver a shock of 490 V with up to 1.0 A of current for a brief time. A…

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Q: Wire Cand wire D are made from different materials and have length Lc = LD = 2.6 m. The resistivity…

A: Concepts: The resistance of a wire of length L and cross-section A is given by,         R=ρLA…

Q: The figure shows cross sections through three long conductors of the same length and material, with…

A:

Q: use a 0.50-mmmm-diameter copper wire as the heating element, how long should the wire be if you want…

A: We know that the Formula of the resistance in terms of the resistivity is given as  R = ρLA where R…

Q: A long wire with a radius of 0.350 cm carries a current. The potential difference across a 3.00 m…

A:

Q: A wire has a resistance of 2.50 Ω, a radius of 4.20 mm and a length of 4.00 m and we want to find…

A: Write the expression for the resistivity

Q: A length of 120 cm from Aluminum cylinder with a cross-sectional area of 2.82 x 10 m2, the…

A:

Q: 1. Consider a cylindrical wire that has conduction electron density 6.0 x 1028 and radius 0.5 mm. An…

A: The average velocity obtained by charged particles (e.g. electrons) in a material owing to an…

Q: Gibby the electrician is messing arround with some wires. He has a gold wire and a silver wire. They…

A: Given: The diameter of both gold and silver wire is d = 2 r = 2 mm The specific resistivity of the…

Q: An electric space heater has a Nichrome heating element with a resistance of 6 N at 20°C. When 120 V…

A: Heating devices such as electric space heaters are designed to focus heat in a specific room or…

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.