Corrections June 2010 Flashcards
0
Q
Why would you use an insulated wire?
A
Prevent a short circuit
1
Q
What’s the difference between a fixed resistor and a variable resistor?
A
Variable can change resistance, and current/voltage
2
Q
What are the particles like in a liquid?
A
Close packed irregular shape, random motion
3
Q
Which way is electron flow?
A
Negative to positive
4
Q
Why would there be a current in a solenoid when the magnet is moving?
A
Because of the changing magnetic field and the mag field lines cut
5
Q
State the part in a nuclear reactor in which nuclear fission takes place
A
Fuel rods
6
Q
Why does the alpha particle travel in a straight line in the Geiger and Marsden experiment?
A
Most of the atom is empty space and nucleus is very small
