Physics 9702 · AS & A Level · Concept of a magnetic field

Concept of a magnetic field — practice question

Nuclear magnetic resonance imaging (NMRI) is employed to provide diagnostic information on structures inside the body. State, during the use of NMRI, the function of:

(a)[3]

the large steady magnetic field.

(b)[2]

the non-uniform magnetic field, whose strength and/or direction changes from place to place.

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