Title: M2 Quiz
Course: ELEC 160WH Introduction to Electricity/Electronics > Section: ELEC 160WH Introduction to Electricity/Electronics

Q: How much current will flow in the circuit above?
- 54.5µA
- 54.5mA
- 264mA
- 1.83A
A: 54.5mA

Q: Which circuit above has the most current flow?
- The circuit at left.
- The circuit at right.
A: The circuit at left.

Q: What is the potential difference (voltage) of the source if the voltmeter indicates this voltage across the resistance?
- 5V
- 3mV
- 9mA
- 9V
A: 9V

Q: The ammeter indicates that the current flowing to the bulb is 2A.

What is the bulb’s resistance?
- 6Ω
- 12Ω
- 2Ω
- 24Ω
A: 6Ω

Q: How much current flows from negative to positive if the light bulb’s resistance is 40Ω?
- 300A
- 0.03
- 482A
- 300mA
A: 300mA

Q: The power being dissipated within a resistive circuit is equal to the product of the voltage across the resistance and the current traveling through the resistance.  If the current through a device is 300mA and the voltage across it is 12V, the power being dissipated by the resistance would be equal to _______.
- 3.6W
- 9W
- 7W
- 3600W
A: 3.6W

Q: Which circuit above has a more conductive pathway?
- The one on the left
- The one on the right
A: The one on the left

Q: Voltage (V) is ___________________ and its unit is the __________.
- a potential difference, volt
- a flow of current, ampere
- an opposition to current, ampere
- a resistance to current, Resistor
A: a potential difference, volt

Q: Current (I) is ___________________ and its unit is the __________.
- a resistance to current, Resistor
- an opposition to current, ampere
- a potential difference, volt
- a quantitative value of electron current flow, ampere
A: a quantitative value of electron current flow, ampere

Q: Resistance (R) is ___________________ and its unit is the __________.
- a flow of current, ampere
- a resistance to ohms, Resistor
- a potential difference, volt
- an opposition to current, Ohm
A: an opposition to current, Ohm

Q: What is the value of this resistor?  The color code is Brown – Black – Yellow - Silver
- 100Ω ±10%
- 100kΩ ±10%
- 104Ω ±10%
- 15Ω ±10%
A: 100kΩ ±10%

Q: What is the resistance of this resistor?   The color code is Green – Blue – Brown - Silver
- 561Ω
- 500Ω
- 560Ω
- 5.6kΩ
A: 560Ω

Q: What is the value of this resistor?  The color code is Brown – Black – Red - Gold
- 1kΩ ±10%
- 100Ω ±10%
- 102Ω ±10%
- 10kΩ ±10%
A: 1kΩ ±10%

Q: What is the value of this resistor?  The color code is Brown – Black – Red - Gold
- 2.2MΩ ±10%
- 225Ω ±10%
- 114Ω ±10%
- 11kΩ ±10%
A: 2.2MΩ ±10%

Q: What is the difference between a resistance and a resistor?  Why do we use resistors in this course for labs?

Q: Light emitting diodes (LEDs) are semiconductor diodes that illuminate when connected with the proper polarity.  LEDs are semiconductor devices, thus they have a relatively low resistance.  Because of the low resistance, if the LED was connected straight to a 9V battery it would draw too much current.  To remedy this, a resistor is placed within the electrical pathway to reduce the quantity of electron flow through the LED.  What value resistor is being used in the illustration above?

The color code is Yellow  – Violet – Brown- Silver
- A 471Ω with a tolerance of ±10%
- A 470Ω with a tolerance of ±10%
- A 4,700Ω with a tolerance of ±10%
- A 4071Ω with a tolerance of ±10%
A: A 470Ω with a tolerance of ±10%

Q: Electrons flow from negative to positive.
- True
- False
A: True

Q: The higher the resistance a device has, the higher the expected current draw.
- True
- False
A: False

Q: Resistors can only dissipate so much energy per second.  This power limitation of the resistor is measured in watts.
- True
- False
A: True