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Lightning is a kind of discharge phenomenon in the atmosphere. The speed of lightning light is 3.0 * 10 quintic power. If there is a lightning that has experienced 0.0025s, then the lightning light is in the air What's the distance?
Lightning is a strong discharge between clouds, between clouds and the ground, and between various parts of the cloud body. The most common lightning is linear lightning. It is some very bright white, pink or light blue bright lines. It is very similar to a river with many branches on the map, and it is also like a tree hanging in the sky with twists and turns and branches
A certain lightning current is 2 * 10 ^ 4a, the voltage is about 1 * 10 ^ 8V, and the discharge time is about 0.001s
P=U*I =10^8V*2*10^4A=2*10^12W
E=Pt=2*10^9J
The current of a certain lightning is about 2 × 10 & # 8308; a, the voltage is about 1 × 10 to the eighth power V, and the discharge time is about 3.6 times 10 to the negative third power
The work done by this lightning current () joules
About () kW. H
W=U*I*T=7.2×10^9J=2×10^3KWH
The induced voltage of TV signal on the antenna is about 0.1mv, which is close to___ 5. The voltage between the clouds of lightning can reach the third power of 10 kV___ 5. Urgent
Analysis: because 1kV = 1000V, 1V = 1000mV. Multiplication is used for large units, and division is used for small units. So: 0.1 divided by 1000 = 0.00001, that is (10 negative fourth power.)
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