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RADT 221 Test 1 Ch 3-4 Exam Questions and Answers

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electrostatics - Answer-study of distribution of electrons at rest electrification - Answer-Process by which electrons are added or removed from an object electrodynamics - Answer-electrons moving from (-) to (+) electrical circuit - Answer-circular path from electron source to positive area and back to source two conditions that encourage electrons to move: - Answer-vacuums and gasses Five laws of electrostatics - Answer-1. repulsion-attraction 2. inverse square 3. distribution 4. concentration 5. movement Three methods of electrification: - Answer-friction, contact, induction what method of electrification produces x-ray? - Answer-induction electric current - Answer-electrons moving in the same direction Four materials that encourage movement of electrons: - Answer-1. conductors (wire) 2. superconductors (aluminum) 3. semiconductors (silicone) 4. insulators (wire coating) Three things an electrical circuit possesses - Answer-1. current 2. potential difference 3. resistance what is the current, what is it measured in? - Answer-amount of e- flowing, amps what is the potential difference, what is it measured in? - Answer-force of e- flowing, volts what is the resistance, what is it measured in? - Answer-opposes e- flowing, ohms Four things that affect resistance - Answer-1. material

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RADT 221 Test 1 Ch 3-4 Exam Questions
and Answers
electrostatics - Answer-study of distribution of electrons at rest

electrification - Answer-Process by which electrons are added or removed from an
object

electrodynamics - Answer-electrons moving from (-) to (+)

electrical circuit - Answer-circular path from electron source to positive area and back to
source

two conditions that encourage electrons to move: - Answer-vacuums and gasses

Five laws of electrostatics - Answer-1. repulsion-attraction
2. inverse square
3. distribution
4. concentration
5. movement

Three methods of electrification: - Answer-friction, contact, induction

what method of electrification produces x-ray? - Answer-induction

electric current - Answer-electrons moving in the same direction

Four materials that encourage movement of electrons: - Answer-1. conductors (wire)
2. superconductors (aluminum)
3. semiconductors (silicone)
4. insulators (wire coating)

Three things an electrical circuit possesses - Answer-1. current
2. potential difference
3. resistance

what is the current, what is it measured in? - Answer-amount of e- flowing, amps

what is the potential difference, what is it measured in? - Answer-force of e- flowing,
volts

what is the resistance, what is it measured in? - Answer-opposes e- flowing, ohms

Four things that affect resistance - Answer-1. material

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