Electricity and Magnetism #3 Free Response Question Solutions - AP Physics C 1998 Released Exam

The video tutorial covers solutions to a problem from the AP Physics C 1998 exam, focusing on electricity and magnetism. It explains the setup of a three-dimensional circuit with a bar moving down inclined rails in a magnetic field. The tutorial walks through calculating the current at terminal velocity, determining the terminal speed, calculating power dissipation, expressing speed as a function of time, and analyzing the effect of adding a resistor. The video emphasizes understanding the physics concepts and provides strategies for tackling algebra-heavy problems.

Describe the setup of the three-dimensional circuit mentioned in the text.

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What is the significance of the angle Theta in the context of the problem?

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What is the significance of the right-hand rule in determining the direction of current in the circuit?

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What are the components of the free body diagram for the bar as it moves down the incline?

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Explain how the forces acting on the bar are resolved into components.

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What is the relationship between the magnetic force and the gravitational force acting on the bar at terminal velocity?

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What is the formula for calculating the current in the bar when it reaches terminal velocity?

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Discuss the concept of motional EMF as described in the text.

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Explain how the potential difference across the bar is related to the current and resistance.

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How does the addition of a second identical resistor affect the speed attained by the bar?

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