- #1
Miike012
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Lightning strikes a point on earth, delivering -20.0 C of
charge from cloud to Earth across a potential difference of 1.00 * 10^8 V.
How much energy is delivered to the ground?
Uelec= V*q = 1.00 * 10^8 V* -20.0 = -2.0*10^9 J.
But the book says it is 2.0*10^9 J... why is it positive and not negative?
charge from cloud to Earth across a potential difference of 1.00 * 10^8 V.
How much energy is delivered to the ground?
Uelec= V*q = 1.00 * 10^8 V* -20.0 = -2.0*10^9 J.
But the book says it is 2.0*10^9 J... why is it positive and not negative?