3/21/2017 Gradebook t Print Calculator Periodic Table Question 3 of 3 Sapling Le

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3/21/2017 Gradebook t Print Calculator Periodic Table Question 3 of 3 Sapling Learning this question has been customized by Robert Fairchild at Nebraska Wesleyan University Determine which set of circumstances will or will not produce a magnetic field and put the item in the proper box. Produces a Magnetic Field Does Not Produce a Magnetic Field A solenoid carrying A long straight wire An proton moving with a non-zero velocity. a current. attached to the negative terminal of a battery. A pair of oppositely charged Along wire carrying a particles, at rest near each other changing current An electron at rest. Previous 2 check Answer Next Exit Hint

Explanation / Answer

A solenoid carrying a current produces a magnetic field due the magnetic effect of electric current.

A long straight wire attached to the negative terminal of the battery is a wire hanging with it's one end open so it doesn't carry any current and hence doesn't produce a magnetic field.

A proton moving with a non-zero velocity produces a magnetic field as current is simply a moving charge i.e. rate of change of charge with respect to time

A pair of oppositely charged particles at rest near each other do not produce a magnetic field because there is no current

A long wire carrying a changing current produces a magnetic field

An electron at rest does not produce a magnetic field as there is no flow of current.

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