1 ) How do you describe a moving point-like charge? 1: A delta Dirac function fo

Question

1 ) How do you describe a moving point-like charge?

1: A delta Dirac function for the charge

2: A delta Dirac function for the current

3: A delta Dirac function for the current and charge

2 ) Which statement is false?

1: At low velocities a rotating charge emits radiation perpendicular to its motion

2: At high velocities a rotating charge emits radiation in its direction of movement

3: At low velocities a linearly moving charge emits radiation perpendicular to its motion

4: At high velocities a linearly moving charge emits radiation in the forward direction

3 ) Which statement is false?

1: The magnetic field of a charge depends on its velocity

2: The electric field of a charge depends on its velocity

3: The magnetic field of a charge depends on its acceleration

4: The electric field of a charge depends on its acceleration

4 ) The potentials depend on position and velocity of the point-like charge

1: at the time of the measurement

2: at the retarded time

Explanation / Answer

1- 4

2-4

3-2

4-1

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