A 20-cm-long conducting rod with mass 18 g is suspended by wires of negligible mass (Fig. 26.41).

Question:

A 20-cm-long conducting rod with mass 18 g is suspended by wires of negligible mass (Fig. 26.41). A uniform magnetic field of 0.15 T points horizontally into the page, as shown. An external circuit supplies current between the supports A and B.

(a) What?s the minimum current necessary to move the bar to the upper position, so it?s supported against gravity?

(b) What direction should the current flow?

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Essential University Physics

ISBN: 978-0321976420

3rd Edition Volume 2

Authors: Richard Wolfsonby

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Question Posted: Feb 28, 2020 07:04 AM

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A 20-cm-long conducting rod with mass 18 g is suspended by wires of negligible mass (Fig. 26.41).

Question:

X Bin B A 20 cm FIGURE 26.41 Problem 52

Step by Step Answer:

L 20 cm 02 m m 25g 0025 kg B 018 T To support t...View the full answer

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