physics 2 Flashcards
1
Q
What is the law of reflection?
A
Angle of incidence = angle of reflection
2
Q
What is specular reflection?
A
where parallel rays all bounce off at the same angle
3
Q
What is diffuse reflection?
A
incident ray is reflected at many angles, rather than at just one angle
4
Q
Why does a thicker wire have a smaller resistance then a thin wire?
A
there is more space for the electrons to move through, reducing the likelihood of collisions and thus heat generation.
5
Q
Where does an ammeter do in a circuit?
A
in series with the components
6
Q
Where does a voltmeter do in a circuit?
A
In parallel across a component
7
Q
Which direction do the magnetic field lines go in a bar magnet?
A
Out the north pole and into the south pole
