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Now, select an AC current source at top right (instead of the DC battery). You c

ID: 1449056 • Letter: N

Question

Now, select an AC current source at top right (instead of the DC battery). You can adjust the frequency of oscillation of the current using the horizontal slider bar (in the blue AC Current Supply window), and you can adjust the peak current with the vertical slider bar. Set it to 100% for now Now, place the electromagnet centered inside the pickup coil, as shown below Part F How does the average brightness of the light bulb depend on the AC frequency? You may want to change the Indicator from the lightbulb in the Pickup Coil to the voltmeter, if you find it difficult to discern brightness changes.

Explanation / Answer

The RMS current is indepedent of frequency as well as the average current in the AC circuit.

And the brightness of the bulb depends on the average current.

Hence the brightness will not change by changing the frequency.