# Introduction To Physical Science

## Chapter 20: Electricity

### Self-Check Quiz-Eng.

 1 Electrical current is measured in __________. Need a Hint? A) volts B) ohms C) amperes D) watts 2 Voltage measures __________. Need a Hint? A) the current B) the resistance C) the power from a circuit D) the energy electrons have 3 What flows in an electric circuit? Need a Hint? A) protons B) neutrons C) electrons D) ions 4 Why do batteries run down? Need a Hint? A) there are too many electrons B) the electrons in the chemicals are used up C) there are too many protons D) the protons are all gone 5 Why do wires with a current running through them get hot? Need a Hint? A) because resistance causes heat B) because voltage causes heat C) because current causes heat D) because electrons cause heat 6 A long, thin wire has __________ than a short, thick wire. Need a Hint? A) lesser resistance B) greater resistance C) greater voltage D) lesser voltage 7 As voltage increases, what happens to current? Need a Hint? A) It decreases. B) It increases. C) It stays the same. D) It fluctuates randomly. 8 As resistance increases, what happens to current? Need a Hint? A) It increases. B) It decreases. C) It stays the same. D) It fluctuates randomly. 9 What do you feel when you receive an electric shock? Need a Hint? A) voltage B) resistance C) current D) power