Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a legend — he was neither stupid nor suicidal. Suppose a kite string of radius 2.10 mm extends directly upward by 0.802 km and is coated with a 0.520 mm layer of water having resistivity 155 Ω·m. If the potential difference between the two ends of the string is 176 MV, what is the current through the water layer? The danger is not this current but the chance that the string draws a lightning strike, which can have a current as large as 500 000 A (way beyond just being lethal).

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Q: Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a…

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Q: Suppose a kite string of radius 2.00 mm extends directly upward by 0.800 km and is coated with a…

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Q: A copper transmission cable (p = 1.72 × 10¬8 Qm) 250 km long and 20 cm in diameter, caries a current…

A: SOLUTION AS

Q: Consider a portion of a cell membrane that has a thickness of 7.50 nm and 1.4 µm × 1.4 µm in area. A…

A: ConceptR=ρLAl=VRl=VAρL                l α A                     ρ=resistivity

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Q: Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a…

A: r1 = 2.16 mm r2 = 0.508 mm l = 0.801 km = 801 m ρ = 182 Ω.m V = 192 MV = 192 x 106 V I = ?

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Q: Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a…

A: Given:

Q: A silver wire of radius r= 0.5 mm and resistance 0.06 Q is connected to a voltage source of 4.6 mV.…

A: Given, Radius r = 0.5 mm = 0.005 m Resistance R = 0.06 Ω Voltage V = 4.6 mV = 4.6 x 10-3 V density…

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.