Introduction to SAT II Physics

4.. Two resistors, and , are identical, but the potential difference across is half the potential difference across. What is the ...

7.. How much heat is produced in a 5 resistor in 10 s when a current of 2 A flows through it? (A)2 J (B)10 J (C)20 J (D)100 J (E ...

10.. A dielectric is inserted into a capacitor while the charge on it is kept constant. What happens to the potential difference ...

The equivalent resistance, , of two identical resistors in parallel is given by the formula: The equivalent resistance of three ...

The equivalent capacitance of two capacitors in parallel is simply the sum of the two capacitors, so = = 2C. The ratio between ...

Permanent Magnets Like all other materials, permanent magnets are made up of atoms that have electrons orbiting a nucleus of pro ...

The Earth itself acts like a huge bar magnet. The presence of a magnetic field about the Earth allows us to use compasses that p ...

A charge of 5 C moves upward at 2 m/s in a magnetic field of 0.3 T that points into the page. What is the magnitude and directio ...

Because the velocity vector and the magnetic field lines are at right angles to one another, the magnitude of the magnetic force ...

EXAMPLE A particle of mass kg has a negative charge of –10 C. It moves in a clockwise circular pattern of radius 2 m at a speed ...

A particle with a positive charge of 3 C moves upward at a speed of 10 m/s. It passes simultaneously through a magnetic field of ...

EXAMPLE In the figure above, a magnetic field of T is applied locally to one part of an electric circuit with a 5 resistor and a ...

The constant is called the permeability of free space, and in a vacuum it has a value of about N/A^2. For SAT II Physics, it’s n ...

other. Interestingly, the fact that each wire exerts an opposite force on the other is further evidence of Newton’s Third Law. K ...

1.. The pointer on a compass is the north pole of a small magnet. If a compass were placed next to a bar magnet, as shown above, ...

4.. What is the magnetic force experienced by a negatively charged particle of 1.0 C that is moving upward at a velocity of 2.0 ...

7.. A positively charged particle of 2.0 C moves upward into an area where both a magnetic field and an electric field are actin ...

9.. Two wires carry current in opposite directions. Which of the following graphs represents the magnetic force acting on each w ...

B To solve this problem, it is helpful to remember how the magnetic field lines around a bar magnet look: The arrows of the ma ...

The minus sign in the answer signifies the fact that we are dealing with a negatively charged particle. That means that the forc ...