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Question 11.What is the unit used to measure electric current?
Question 22.A copper voltameter uses a square cathode plate measuring 7 inches on each side. The current density is kept at 10 amperes per foot. What current is required to deposit copper fully on both sides of the cathode at the specified current density?
Question 33.What well-known expression does this picture represent?
Question 44.A 24-watt automobile headlight is powered by the car's 12V system. What is the internal resistance of the bulb (in ohms)?
Question 55.The two types of current are:
Question 66.Current is:
Question 77.According to Ohm's law, increasing the voltage _____
Question 88.For a fixed voltage input, increasing the resistance
Question 99.How much work is required to move a particle with a 3 C charge from a location in an electric field to that has a 10 V potential to a location that has a 9 V potential?
Question 1010.Electric potential is analogous to _____ potential because it describes a particles potential energy solely as a function of its location in a energy field.
Question 1111.This is the unit of measure for electrical current:
Question 1212.This is the type of current we use now:
Question 1313._____ is a type of diode which allows for reverse direction of current when a certain voltage is reached. It is often used as a voltage reference.
Question 1414.The arrow in the diode schematic symbol denotes the _____.
Question 1515.What is current in a circuit?
Question 1616.What is an electric circuit?
Question 1717.Electrical resistance:
Question 1818.Electrical resistance is caused by:
Question 1919.A pacemaker is a device implanted beneath the collar bone that provides shocks to the heart to keep it beating properly. How many electrons are transmitted to a heart if the pacemaker provides 1 milliamp (0.001 amp) of current over 0.1 second?
Question 2020.How many electrons does it take to equal 100 coulombs of charge?
Question 2121.When given the current and resistance, power can be calculated by:
Question 2222.One watt is equal to:
Question 2323.Which of the following is NOT a reason that we use symbols in our circuit diagrams?
Question 2424.What is a circuit diagram (or electrical schematic diagram)?
Question 2525.What is the apparatus used to measure electric charge and standardize the ampere unit?
Question 2626.A circuit contains a voltage source of 3V and an unknown resistance. The current is known to be 300 mA. What is the resistance (in ohms)?
Question 2727.Direct current:
Question 2828.Given a voltage of 20 volts applied across a resistor of 10 ohms, the power emitted (dissipated) by the resistor is _____.
Question 2929.What units are used to describe electric potential difference?
Question 3030.This is the unit of measure for electrical power:
Electric Currents, Resistance & Potential Difference Chapter Exam Instructions
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