-In the Figure,a Bar Is in Contact with a Pair

question 66

Multiple Choice

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field,perpendicular to the plane of the rails,is present.The bar is in motion with velocity ν.The induced current through the resistor R is:

• A)zero
• B)from a to b
• C)from b to a

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Definitions:

Developmental Milestone

Specific skills or abilities that most children exhibit at a certain age range, marking significant progress in physical, emotional, or intellectual development.

Lifting Head

An early developmental milestone in infants, indicating neck and upper body strength, where the infant is able to lift and hold up their head independently.

Rolling Over

A developmental milestone where an infant learns to turn over from the back to the stomach or vice versa, usually occurring around 4 to 6 months of age.

Dynamic Systems Theory

A framework describing motor skills as resulting from ongoing interactions among physical, cognitive, and socioemotional influences and environmental supports; previously mastered skills are combined to provide more complex and effective ways of exploring and controlling the environment.