MCQOPTIONS
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MCQOPTIONS
This section includes 217 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Electrons flow from negative to positive when a voltage is applied across a conductor. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 152. |
The abundance of electrons would imply a negative charge. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 153. |
All resistors can be placed into one of two main categories: ___ or ___. |
| A. | carbon film, metal film |
| B. | fixed, variable |
| C. | wire wound, carbon-composition |
| D. | insulator, semiconductor |
| Answer» C. wire wound, carbon-composition | |
| 154. |
An open circuit allows current to flow. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 155. |
A conductor will not carry current. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 156. |
A normally open push-button switch can carry current when not pushed. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 157. |
The atomic number of an atom equals the number of electrons orbiting the nucleus. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 158. |
Voltage is the driving force that establishes the flow of current. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 159. |
Switches are either on or off, but can have multiple poles. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 160. |
Carbon is a semiconductor. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 161. |
The unit for resistance is the ___ and the symbol for resistance is ___. |
| A. | ampere, R |
| B. | ohm, R |
| C. | volt, Q |
| D. | ohm, J |
| Answer» C. volt, Q | |
| 162. |
Resistance is the pressure that causes current to flow. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 163. |
Voltage is _________. |
| A. | the opposition to the flow of current |
| B. | the movement of free electrons |
| C. | the force that exists between charged particles |
| D. | the force that causes water to flow |
| Answer» D. the force that causes water to flow | |
| 164. |
___ make electric current possible. |
| A. | Protons |
| B. | Neutrons |
| C. | Shells |
| D. | Free electrons |
| Answer» E. | |
| 165. |
Charges of the same polarity tend to attract one another. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 166. |
All conductors have some resistance. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 167. |
An element is a substance that is: |
| A. | varied throughout the entire piece |
| B. | used only in electronics |
| C. | electrically charged |
| D. | found only in its pure form |
| Answer» E. | |
| 168. |
The potential difference between two points is called voltage. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 169. |
How many valence shell electrons are there in semiconductor atoms? |
| A. | 16 |
| B. | 8 |
| C. | 4 |
| D. | 2 |
| Answer» D. 2 | |
| 170. |
Which is the smallest? |
| A. | atom |
| B. | proton |
| C. | neutron |
| D. | electron |
| Answer» E. | |
| 171. |
An electron is the smallest subatomic particle of negative charge that orbits the nucleus of the atom. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 172. |
An atom with more electrons than protons is ___. |
| A. | a positive ion |
| B. | a balanced atom |
| C. | a negative ion |
| D. | not possible |
| Answer» D. not possible | |
| 173. |
The charge of one coulomb is equal to: |
| A. | 6.24 x 10‚àí18 electrons |
| B. | one ampere |
| C. | one second |
| D. | 6.24 x 1018 electrons |
| Answer» E. | |
| 174. |
One coulomb of charge passing a point in one second is one ampere of current. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 175. |
What type of switch is this? |
| A. | push button |
| B. | SPST |
| C. | DPDT |
| D. | SPDT |
| Answer» E. | |
| 176. |
In which states may matter may be found? |
| A. | solid, liquid, or mineral |
| B. | solid, gas, or liquid |
| C. | mineral, gas, or liquid |
| D. | plastic, solid, or gas |
| Answer» C. mineral, gas, or liquid | |
| 177. |
If the current in a circuit equals 0 A, it is likely that the |
| A. | voltage is too high |
| B. | resistance is too low |
| C. | circuit has a short |
| D. | circuit is open |
| Answer» E. | |
| 178. |
The movement of electrons between two points is called voltage. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» C. 1 | |
| 179. |
Which part of an atom has no electrical charge? |
| A. | Electron |
| B. | Neutron |
| C. | Proton |
| D. | All of the above |
| Answer» C. Proton | |
| 180. |
The removal of a non-neutral subatomic particle converts the atom into a: |
| A. | charged ion |
| B. | nucleus |
| C. | heavier element |
| D. | compound |
| Answer» B. nucleus | |
| 181. |
The capacity of a battery cell is measured by the amount of __________ that can be supplied over time. |
| A. | current |
| B. | voltage |
| C. | coulombs |
| D. | joules |
| Answer» B. voltage | |
| 182. |
What is the name of the pressure that moves electrons in a closed circuit? |
| A. | amperes |
| B. | ohms |
| C. | voltage |
| D. | coulombs |
| Answer» D. coulombs | |
| 183. |
If an electronic component fails by developing an open circuit, the current will __________. |
| A. | increase |
| B. | decrease |
| C. | cease |
| D. | not change |
| Answer» D. not change | |
| 184. |
The basic difference between a fuse and a circuit breaker is |
| A. | a fuse is slower |
| B. | a fuse is reusable |
| C. | a circuit breaker is reusable |
| D. | a circuit breaker is more reliable |
| Answer» D. a circuit breaker is more reliable | |
| 185. |
A connection to the frame of a piece of electronic equipment is sometimes referred to as ___ ground. |
| A. | a chassis |
| B. | an earth |
| C. | a circuit |
| D. | either chassis or circuit |
| Answer» E. | |
| 186. |
If 40 C of charge flow past a point in 20 s, what is the current? |
| A. | 0.083333333333333 |
| B. | 0.5 A |
| C. | 20 A |
| D. | 40 A |
| Answer» B. 0.5 A | |
| 187. |
An ammeter is used to measure |
| A. | voltage |
| B. | current |
| C. | resistance |
| D. | All of the above |
| Answer» C. resistance | |
| 188. |
The atomic number is the number of neutrons in the nucleus of an atom. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» C. 1 | |
| 189. |
If an electrical system is compared to a fluid system, the electrical current corresponds to the: |
| A. | pressure |
| B. | pump |
| C. | water wheel |
| D. | water flow |
| Answer» E. | |
| 190. |
The unit of measurement for conductance is the coulomb. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 191. |
Current is considered as the movement of: |
| A. | electrons |
| B. | protons |
| C. | charge |
| D. | nuclei |
| Answer» B. protons | |
| 192. |
When considering conventional current versus electron current flow: |
| A. | electron current flow came first |
| B. | protons move in conventional current flow |
| C. | conventional current flow came first |
| D. | the direction of current is the same in both methods |
| Answer» D. the direction of current is the same in both methods | |
| 193. |
An example of potential energy is: |
| A. | tea-kettle steam |
| B. | a moving vehicle |
| C. | the sun |
| D. | a battery |
| Answer» E. | |
| 194. |
Fuses and circuit breakers are designed to ___ when excessive current flows. |
| A. | buzz |
| B. | illuminate |
| C. | close |
| D. | open |
| Answer» E. | |
| 195. |
A multimeter measures only voltage. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 196. |
Batteries differ from fuel cells in that |
| A. | a battery is a closed system |
| B. | a battery uses hydrogen and oxygen to create electricity |
| C. | a battery uses a polymer electrolyte membrane |
| D. | none of the above |
| Answer» B. a battery uses hydrogen and oxygen to create electricity | |
| 197. |
A basic electric circuit is made up of what components? |
| A. | A load, a resistor, and a conductive path for current |
| B. | A voltage source, a load, and a conductive path for current |
| C. | A voltage source, a conductive path for current, and a battery |
| D. | A conductive path for current, a battery, and a copper wire |
| Answer» C. A voltage source, a conductive path for current, and a battery | |
| 198. |
In the eighteenth and nineteenth centuries conventional current flow was routinely used. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 199. |
What are the basic building blocks that all matter is composed of? |
| A. | electrons, neutrons, and protons |
| B. | two protons for each neutron |
| C. | two protons for each electron |
| D. | electrons, neutrons, and charged ions |
| Answer» B. two protons for each neutron | |
| 200. |
If a fluid system is compared to an electrical system, the fluid pump will correspond to a: |
| A. | conductor |
| B. | lamp |
| C. | battery |
| D. | insulator |
| Answer» D. insulator | |