Which of the Solenoids Described Below Has the Greatest Magnetic

question 29

Multiple Choice

Which of the solenoids described below has the greatest magnetic field along its axis?

• A)a solenoid of length L, with N turns and a current I
• B)a solenoid of length L, with N/2 turns and a current I
• C)a solenoid of length L/2, with N/2 turns and a current I
• D)a solenoid of length 2L, with N turns and a current I/2
• E)a solenoid of length 2L, with 2N turns and a current 2I

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Definitions:

Expected Value

A statistical concept representing the average outcome of a random variable over a large number of experiments or trials.

Binomial Probability Distribution

A probability distribution that summarizes the likelihood that a value will take one of two independent values under a given set of parameters or conditions.

Expected Number

A statistical term referring to the average value or mean of a random variable, calculated as the sum of all possible values each multiplied by its probability of occurrence.

Unbiased Coin

A term used to describe a fair coin in which each toss is equally likely to come up heads or tails.