40 TOP VOLTAGE, CURRENT and RESISTANCE Online Test – Multiple Choice Questions and Answers 1. An ohmmeter is an instrument for measuring wattage voltage current resistance 2. Materials with lots of free electrons are called conductors insulators semiconductors filters 3. If there is 6 A of current through the filament of a lamp, how many coulombs of charge move through the filament in 1.75 s? 3.4 C 10.5 C 34 C 105 C 4. Electrons in the outer orbit are called nuclei valences waves shells 5. An ammeter is an electrical instrument used to measure resistance voltage current none of these 6. Current flows in a circuit when a switch is closed the switch is either open or closed a switch is opened there is no voltage 7. A thermistor is a type of resistor battery power supply switch 8. A wiper is the sliding contact in a thermistor switch potentiometer photoconductive cell 9. A multimeter measures voltage resistance current current, voltage, and resistance 10. When the current is 2.5 A, how many coulombs pass a point in 0.2 s? 0.5 C 1.25 C 5 C 12.5 C Loading … Question 1 of 10
