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A lightning strike on a metal tower can be described as follows - Edexcel - GCSE Physics - Question 4 - 2012 - Paper 1
Question 4
A lightning strike on a metal tower can be described as follows. In the cloud. A thunder cloud contains moving ice particles. Some of these ice particles are nega... show full transcript
Worked Solution & Example Answer:A lightning strike on a metal tower can be described as follows - Edexcel - GCSE Physics - Question 4 - 2012 - Paper 1
Step 1
Which row of this table is correct when the cloud is over the top of the tower before the lightning flash?
Answer
Before the lightning flash, the negatively charged particles at the bottom of the cloud induce a positive charge on the top of the metal tower. Since the charge on the top of the cloud is negative and the charge on top of the tower is positive, the correct answer is:
Row B: charge on top of the cloud is negative, charge on top of the tower is positive.