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Problem 10.7A time-dependent point charge q (t) at the origin, p(r, t) = q (t)8³ (r), is fed by a current J(r, t) = −(1/4л) (q/r²) î, where q = dq/dt. (a) Check that charge is conserved, by confirming that the continuity equation is obeyed. (b) Find the scalar and vector potentials in the Coulomb gauge. If you get stuck, try working on (c) first. (c) Find the fields, and check that they satisfy all of Maxwell's equations.³

Problem 10.7A time-dependent point charge q (t) at the origin, p(r, t) = q (t)8³ (r), is fed by a current J(r, t) = −(1/4л) (q/r²) î, where q = dq/dt. (a) Check that charge is conserved, by confirming that the continuity equation is obeyed. (b) Find the scalar and vector potentials in the Coulomb gauge. If you get stuck, try working on (c) first. (c) Find the fields, and check that they satisfy all of Maxwell's equations.³

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Problem 10.7A time-dependent point charge q (t) at the origin, p (r, t) = q (t)8³ (r), is fed by a current J(r, t) = − (1/4)(ġ/r²) î, where q = dq/dt. (a) Check that charge is conserved, by confirming that the continuity equation is obeyed. (b) Find the scalar and vector potentials in the Coulomb gauge. If you get stuck, try working on (c) first. (c) Find the fields, and check that they satisfy all of Maxwell's equations.³
Transcribed Image Text:Problem 10.7A time-dependent point charge q (t) at the origin, p (r, t) = q (t)8³ (r), is fed by a current J(r, t) = − (1/4)(ġ/r²) î, where q = dq/dt. (a) Check that charge is conserved, by confirming that the continuity equation is obeyed. (b) Find the scalar and vector potentials in the Coulomb gauge. If you get stuck, try working on (c) first. (c) Find the fields, and check that they satisfy all of Maxwell's equations.³
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