A student claims that if lightning strikes a metal flagpole, the force exerted by the earth’s magnetic field on the current in the pole can be large enough to bend it. Typical lightning currents are of the order of 10^4 to 10^5 A. Is the student’s opinion justified? Explain your reasoning.
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A student claims that if lightning strikes a metal flagpole, the
force exerted by the earth’s magnetic field on the current in the pole can
be large enough to bend it. Typical lightning currents are of the order of
10^4 to 10^5 A. Is the student’s opinion justified? Explain your reasoning.
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