An Unusual Lightning Strike Has a Vertical Portion with a Current

question 54

Multiple Choice

An unusual lightning strike has a vertical portion with a current of −400 A downwards. The Earth's magnetic field at that location is parallel to the ground and has a magnitude of 30 μT. In N, the force exerted by the Earth's magnetic field on the 25 m-long current is

• A) 0.
• B) 0.012 N, East.
• C) 0.012 N, West.
• D) 0.30 N, West.
• E) 300 N, East.

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Definitions:

Primary groups

Small social groups characterized by close, personal, and enduring relationships, such as family or close friends.

Long-term

Pertaining to a prolonged period of time, often extending beyond what is usual or expected.

Intimate relationships

Deeply personal connections between individuals characterized by emotional attachment, love, trust, and ongoing personal interaction.

Group dynamics

The study of the behavioral interactions and psychological processes occurring within a social group.