Figure 3 shows a circuit consisting of a constant resistance R. The circuit is made of a horizontal conductor of length a, a semi-circular conductor of radius a, and a straight movable conductor that can rotate about point O at angle o. The circuit is placed in a constant magnetic field B pointing into the page. What is the magnitude and the direction of the current induced? a Φ Figure 3: A circuit in a magnetic field [5 marks
Figure 3 shows a circuit consisting of a constant resistance R. The circuit is made of a horizontal conductor of length a, a semi-circular conductor of radius a, and a straight movable conductor that can rotate about point O at angle o. The circuit is placed in a constant magnetic field B pointing into the page. What is the magnitude and the direction of the current induced? a Φ Figure 3: A circuit in a magnetic field [5 marks
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