RELATIVITYONE RCA 3 FINAL PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
◉ PROTON. Answer: A SUBATOMIC PARTICLE HAVING A POSITVIE
CHARGE IDENTICAL IN MAGNITUDE TO THE NEGATIVE CHARGE
OF AN ELECTRON AND, TOGETHER WITH THE NEUTRON, A
COMPONENT OF ALL ATOMIC NUCLEI. THE PROTON FORMS, BY
ITSLEF, THE NUCLEUS OF THE HYDROGEN ATOM. THE MASS OF A
PROTON IS APPROXIMATELY 1836 TIMES THAT OF AN ELECTRON
AND THE MASS OF AN ATOM IS CONTAINED ALMOST ENTIRELY IN
THE NUCLEUS. THE PROTON HAS AN INTRINSIC ANGULAR
MOMENTUM OR SPIN AND THUS A MAGNETIC MOMENT (VERY
SMALL MAGNETIC FIELD). THE NUMBER OF PROTONS IN THE
NUCLEUS OF AN ATOM DETERMINES WHAT ELEMENT IT IS; THE
ATOMIC NUMBER OF AN ELEMENT DENOTES THE NUMBER OF
PROTONS IN THE NUCLEUS.
◉ ELECTRON. Answer: A SUBATOMIC MPARTICLE THAT, ALONG
WITH PROTONS AND NEUTRONS, MAKE UP THE ATOMS THE FLOW
OF AN ELECTRIC CURRENT IN A CONDUCTOR IS CAUSED BY THE
DRIFTING OF FREE ELECTRONS IN THE CONDUCTOR. HEAT
CONDUCTION IS ALSO PRIMARILY A PHENOMENON OF ELECTRON
ACTIVITY. THE CHARGE OF THE ELECTRON IS THE BASIC UNIT OF
ELECTRICITY. ELECTRONS HAVE HALF-INTEGRAL SPIN; SPIN IS A
PROPERTY OF SUBATOMIC PARTICLES THAT INDICATES THE
PARTICLE'S ANGULAR MOMENTUM.
,◉ NEUTRON. Answer: A SUBATOMIC PARTICLE THAT IS NEUTRAL
THEREFORE HAS NO CHARGE. IT IS LOCATED IN THE NUCLEUS
AND SERVES AS A STABILIZER. THE MASS OF A NEUTRON IS
SLIGHTLY GREATER THAN THE PROTON MASS AND HAS AN
ENORMOUS EFFECT ON THE QUANTUM SPIN VALUE OF AN
ELEMENT. THE NET CHARGE ON A NEUTRON IS 0
◉ MAGNETISM. Answer: IS DESCRIED AS THE ABILITY OF A
SUBSTANCE TO ATTRACT IRON, COBALT AND NICKEL. IT IS THE
POWER OR FORCE CREATED BY A SUBSTANCE HAVING THE
PROPERTY OF CREATING OR INDUCING MAGNETIC DIPOLES. THE
MAGNETIC FIELD OF ANY MAGNET HAS A DIRECTION, SIGNIFIED
NORTH AND SOUTH. THIS PROPERTY OF A MAGNET MAKES IT A
DIPOLE. DIPOLE - A MAGNETIC FIELD CHARACTERIZED BY ITS
OWN MAGNETIC NORTH AND SOUTH POLES SEPARATED BY A
FINITE DISTANCE.
◉ MAGNETIC SUSCEPTIBILITY. Answer: DEFINED AS THE
TENDENCY OF A SUBSTANCE TO ATTRACT OR REPEL MAGNETIC
LINES OF FORCE DEPENDENT ON THE MAGNETIC PROPERTIES OF
ITS ELECTRONS.
◉ DIAMAGNETIC. Answer: THE PROPERTY OF MOST SUBSTANCES
WITH PAIRED ORBITAL ELECTRONS THAT HAVE OPPOSITE
SPINNING AND THEIR MAGNETIC MOENTS CANCEL EACH OTHER
OUT. SUBSTANCES WITH DIAMAGNETIC SUSCEPTIBILITY WEAKLY
,ATTRACT OR REPEL MAGNETIC LINES OF FORCE. MAGNETIC
SUSCEPTIBILITY OF MOST HUMAN BODY TISSUES ARE DESCRIBED
AS DIAMAGNETIC.
◉ PARAMAGNETIC. Answer: THE PROPERTY OF SUBSTANCES WITH
POSITIVE MAGNETIC SUSCEPTIBILITY THAT ATTRACT AND REPEL
MAGNETIC LINES OF FORCE. THESE SUBSTANCES (GADOLINIUM,
METHEMOGLOBIN, FREE RADICALS) CONTAIN ONE OR MORE
UNPAIRED ORBITAL ELECTRONS AND PRODUCE MARKED
REDUCTIONS IN THE T1 AND T2 RELAXATION TIMES. UNPAIRED
ORBITAL ELECTRONS SPIN IN THE SAME DIRECTION AND HAVE
THE TENDENCY TO LINE UP WITH THE MAGNETIC FIELD.
THEREFORE PRODUCING ADDITIONAL MAGNETIC FIELDS.
◉ SUPER-PARAMAGNETIC. Answer: THE PROPERTY OF
SUBSTANCES WITH LARGE POSITIVE MAGNETIC SUSCEPTIBILITY
WHICH STRONGLY ATTRACT OR REPEL MAGNETIC LINE SOF
FORCE. THESE SUBSTANCES (HEMOSIDERIN AND
SUPERPARAMAGNETIC IRON OXIDE -SPIO) HAVE A SINGLE
MAGNETIC DOMAIN AND ARE MAGNETIZED IN A MAGNETIC
FIELD. THEIR MAGNETIC SUSCEPTIBILITIES ARE MUCH LARGER
THAN THOSE OF PARAMAGNETIC SUBSTANCES AND SIMILAR TO
THOSE OF FERROMAGNETIC MATERIALS. UNLIKE
FERROMAGNETIC SUBSTANCES, SUPERPARAMAGNETIC
MATERIALS DO NOT EXHIBIT RESIDUAL MAGNETISM WHEN THE
EXTERNAL FIELD IS REMOVED.
, ◉ FERROMAGNETIC. Answer: THE PROPERTY OF SUBSTANCES
WITH LARGE POSITIVE MAGNETIC SUSCEPTIBILITY THAT BECOME
MAGNETIZED WITHIN A MAGNETIC FIELD AND REMAIN
MAGNETIZED AGTER BEING REMOVED FROM THE MAGNETIC
FIELD. FERROMAGNETIC SUBSTANCES INCLUDE A NUMBER OF
IRON AN COBALT-CONTAINING METALS.
◉ MAGNETIC FIELD. Answer: A VECTOR QUANTITIY CONSISTING
OF BOTH A NORTH AND SOUTH POLE; IT EXERTS AN INDUCTION
FORCE ON FERROMAGNETIC AND PARAMAGNETIC SUBSTANCES.
WHEN SYMBOLIZING THE FLOW AND AREA OF A MAGNETIC
FIELD, SPECIAL LINES ARE USED; THEY ARE FIELD OR FLUX LINES
◉ FIELD OR FLUX LINES. Answer: MEASURE THE FLOW AND AREA
OF A MAGNETIC FIELD. THE STRONGEST AREA OF THE MAGNETIC
FIELD IS WHERE THE FIELD OR FLUX LINES CONVERGE AND IS
CALLED THE ISOCENTER. AWAY FROM THE ISOCENTER THE FIELD
OR FLIX LINES REPRESENT THE FRINGE FIELDS.
◉ ISOCENTER. Answer: AREA OF THE MAGNETIC FIELD WHERE
THE FIELD STRENGTH IS THE GREATEST, IN MRI THE CENTER OF
THE SCAN AREA
◉ FRINGE FIELDS. Answer: WEAKER MAGNETIC FIELDS THAT ARE
AWAY FROM THE ISOCENTER, IN MRI OUTSIDE OF THE SCANNING
AREA.
QUESTIONS WITH ANSWERS GRADED A+
◉ PROTON. Answer: A SUBATOMIC PARTICLE HAVING A POSITVIE
CHARGE IDENTICAL IN MAGNITUDE TO THE NEGATIVE CHARGE
OF AN ELECTRON AND, TOGETHER WITH THE NEUTRON, A
COMPONENT OF ALL ATOMIC NUCLEI. THE PROTON FORMS, BY
ITSLEF, THE NUCLEUS OF THE HYDROGEN ATOM. THE MASS OF A
PROTON IS APPROXIMATELY 1836 TIMES THAT OF AN ELECTRON
AND THE MASS OF AN ATOM IS CONTAINED ALMOST ENTIRELY IN
THE NUCLEUS. THE PROTON HAS AN INTRINSIC ANGULAR
MOMENTUM OR SPIN AND THUS A MAGNETIC MOMENT (VERY
SMALL MAGNETIC FIELD). THE NUMBER OF PROTONS IN THE
NUCLEUS OF AN ATOM DETERMINES WHAT ELEMENT IT IS; THE
ATOMIC NUMBER OF AN ELEMENT DENOTES THE NUMBER OF
PROTONS IN THE NUCLEUS.
◉ ELECTRON. Answer: A SUBATOMIC MPARTICLE THAT, ALONG
WITH PROTONS AND NEUTRONS, MAKE UP THE ATOMS THE FLOW
OF AN ELECTRIC CURRENT IN A CONDUCTOR IS CAUSED BY THE
DRIFTING OF FREE ELECTRONS IN THE CONDUCTOR. HEAT
CONDUCTION IS ALSO PRIMARILY A PHENOMENON OF ELECTRON
ACTIVITY. THE CHARGE OF THE ELECTRON IS THE BASIC UNIT OF
ELECTRICITY. ELECTRONS HAVE HALF-INTEGRAL SPIN; SPIN IS A
PROPERTY OF SUBATOMIC PARTICLES THAT INDICATES THE
PARTICLE'S ANGULAR MOMENTUM.
,◉ NEUTRON. Answer: A SUBATOMIC PARTICLE THAT IS NEUTRAL
THEREFORE HAS NO CHARGE. IT IS LOCATED IN THE NUCLEUS
AND SERVES AS A STABILIZER. THE MASS OF A NEUTRON IS
SLIGHTLY GREATER THAN THE PROTON MASS AND HAS AN
ENORMOUS EFFECT ON THE QUANTUM SPIN VALUE OF AN
ELEMENT. THE NET CHARGE ON A NEUTRON IS 0
◉ MAGNETISM. Answer: IS DESCRIED AS THE ABILITY OF A
SUBSTANCE TO ATTRACT IRON, COBALT AND NICKEL. IT IS THE
POWER OR FORCE CREATED BY A SUBSTANCE HAVING THE
PROPERTY OF CREATING OR INDUCING MAGNETIC DIPOLES. THE
MAGNETIC FIELD OF ANY MAGNET HAS A DIRECTION, SIGNIFIED
NORTH AND SOUTH. THIS PROPERTY OF A MAGNET MAKES IT A
DIPOLE. DIPOLE - A MAGNETIC FIELD CHARACTERIZED BY ITS
OWN MAGNETIC NORTH AND SOUTH POLES SEPARATED BY A
FINITE DISTANCE.
◉ MAGNETIC SUSCEPTIBILITY. Answer: DEFINED AS THE
TENDENCY OF A SUBSTANCE TO ATTRACT OR REPEL MAGNETIC
LINES OF FORCE DEPENDENT ON THE MAGNETIC PROPERTIES OF
ITS ELECTRONS.
◉ DIAMAGNETIC. Answer: THE PROPERTY OF MOST SUBSTANCES
WITH PAIRED ORBITAL ELECTRONS THAT HAVE OPPOSITE
SPINNING AND THEIR MAGNETIC MOENTS CANCEL EACH OTHER
OUT. SUBSTANCES WITH DIAMAGNETIC SUSCEPTIBILITY WEAKLY
,ATTRACT OR REPEL MAGNETIC LINES OF FORCE. MAGNETIC
SUSCEPTIBILITY OF MOST HUMAN BODY TISSUES ARE DESCRIBED
AS DIAMAGNETIC.
◉ PARAMAGNETIC. Answer: THE PROPERTY OF SUBSTANCES WITH
POSITIVE MAGNETIC SUSCEPTIBILITY THAT ATTRACT AND REPEL
MAGNETIC LINES OF FORCE. THESE SUBSTANCES (GADOLINIUM,
METHEMOGLOBIN, FREE RADICALS) CONTAIN ONE OR MORE
UNPAIRED ORBITAL ELECTRONS AND PRODUCE MARKED
REDUCTIONS IN THE T1 AND T2 RELAXATION TIMES. UNPAIRED
ORBITAL ELECTRONS SPIN IN THE SAME DIRECTION AND HAVE
THE TENDENCY TO LINE UP WITH THE MAGNETIC FIELD.
THEREFORE PRODUCING ADDITIONAL MAGNETIC FIELDS.
◉ SUPER-PARAMAGNETIC. Answer: THE PROPERTY OF
SUBSTANCES WITH LARGE POSITIVE MAGNETIC SUSCEPTIBILITY
WHICH STRONGLY ATTRACT OR REPEL MAGNETIC LINE SOF
FORCE. THESE SUBSTANCES (HEMOSIDERIN AND
SUPERPARAMAGNETIC IRON OXIDE -SPIO) HAVE A SINGLE
MAGNETIC DOMAIN AND ARE MAGNETIZED IN A MAGNETIC
FIELD. THEIR MAGNETIC SUSCEPTIBILITIES ARE MUCH LARGER
THAN THOSE OF PARAMAGNETIC SUBSTANCES AND SIMILAR TO
THOSE OF FERROMAGNETIC MATERIALS. UNLIKE
FERROMAGNETIC SUBSTANCES, SUPERPARAMAGNETIC
MATERIALS DO NOT EXHIBIT RESIDUAL MAGNETISM WHEN THE
EXTERNAL FIELD IS REMOVED.
, ◉ FERROMAGNETIC. Answer: THE PROPERTY OF SUBSTANCES
WITH LARGE POSITIVE MAGNETIC SUSCEPTIBILITY THAT BECOME
MAGNETIZED WITHIN A MAGNETIC FIELD AND REMAIN
MAGNETIZED AGTER BEING REMOVED FROM THE MAGNETIC
FIELD. FERROMAGNETIC SUBSTANCES INCLUDE A NUMBER OF
IRON AN COBALT-CONTAINING METALS.
◉ MAGNETIC FIELD. Answer: A VECTOR QUANTITIY CONSISTING
OF BOTH A NORTH AND SOUTH POLE; IT EXERTS AN INDUCTION
FORCE ON FERROMAGNETIC AND PARAMAGNETIC SUBSTANCES.
WHEN SYMBOLIZING THE FLOW AND AREA OF A MAGNETIC
FIELD, SPECIAL LINES ARE USED; THEY ARE FIELD OR FLUX LINES
◉ FIELD OR FLUX LINES. Answer: MEASURE THE FLOW AND AREA
OF A MAGNETIC FIELD. THE STRONGEST AREA OF THE MAGNETIC
FIELD IS WHERE THE FIELD OR FLUX LINES CONVERGE AND IS
CALLED THE ISOCENTER. AWAY FROM THE ISOCENTER THE FIELD
OR FLIX LINES REPRESENT THE FRINGE FIELDS.
◉ ISOCENTER. Answer: AREA OF THE MAGNETIC FIELD WHERE
THE FIELD STRENGTH IS THE GREATEST, IN MRI THE CENTER OF
THE SCAN AREA
◉ FRINGE FIELDS. Answer: WEAKER MAGNETIC FIELDS THAT ARE
AWAY FROM THE ISOCENTER, IN MRI OUTSIDE OF THE SCANNING
AREA.
