
RAD 230 - Week 2
Authored by Brad Jenkins
Biology
University
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72 questions
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1.
MULTIPLE SELECT QUESTION
10 mins • 1 pt
What are the three methods of electrification?
Induction
Diffusion
Contact
Friction
Excitation
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
If you run a comb through your hair, electrons are removed from the hair and deposited on the comb. The comb becomes electrified with too many negative charges. An electrified comb can pick up tiny pieces of paper as though the comb were a magnet. This is an example of ________________.
induction
electric ground
static electricity
potential
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Electrostatic charge is measured in:
Amperes
Joules
Coulombs
Electron volts
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Which of the following is true?
A neutron will repel a neutron.
A proton will repel a neutron.
An electron will repel a neutron.
An electron will attract an electron.
An electron will repel an electron.
Answer explanation
No particle will repel a neutron because neutrons are electrically neutral. Remember, the principal electrostatic law states that like charges will repel each other, unlike charges will attract. Electrons will attract protons, but repel electrons.
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
What causes electrification?
An excess of neutrons
An excess of protons
Transfer of electrons
Transfer of neutrons
Transfer of protons
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Increasing atomic number :
will decrease the energy of characteristic x-rays
does not affect the energy of characteristic x-rays
increases the energy of characteristic x-rays
results in radiolucent areas on x-ray imaging
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
What is unique about the autotransformer?
It has 2 coils - one on the primary side and one on the secondary side
It is a single coil of wire
It changes AC to DC
It adjusts the incoming voltage to exactly 220V
Answer explanation
A transformer with 2 coils is a step-up or step-down transformer.
The autotransformer is a single coil of wire.
Rectifiers change AC to DC.
Incoming voltage is adjusted to 220V by the line compensator.
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