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.

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

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

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

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

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

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

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

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

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