Physics

Problem

Four square enclosures, each of side

0.50\,\text{m}

, are proposed to shield a sensitive detector from a

5\,\text{kHz}

magnetic field. Which enclosure will provide the greatest attenuation due purely to eddy currents? a)

3\,\text{mm}

thick laminated steel sheet b)

3\,\text{mm}

thick aluminium sheet c)

3\,\text{mm}

thick copper sheet d)

1\,\text{mm}

thick copper sheet