# Answer on Electric Circuits Question for Emmanuel

Question #59025

The following are true about electric field lines except that they

are drawn such that the magnitude of the field is proportional to the number of lines crossing a unit area perpendicular to the lines

do not intersect one another

are discontinuous and may terminate in a vacuum

give the direction of motion of a unit positive test-charge under the action of the electrostatic force

7 What are the dimensions of the constant k in Coulomb’s law of electrostatics?

ML2T−4T−2A−1

ML2T3A−2

M−2L3T2A−1

ML3T−4A−2

are drawn such that the magnitude of the field is proportional to the number of lines crossing a unit area perpendicular to the lines

do not intersect one another

are discontinuous and may terminate in a vacuum

give the direction of motion of a unit positive test-charge under the action of the electrostatic force

7 What are the dimensions of the constant k in Coulomb’s law of electrostatics?

ML2T−4T−2A−1

ML2T3A−2

M−2L3T2A−1

ML3T−4A−2

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