Suppose there are three light switches outside a room. Inside is a single light bulb, controlled by one of the three switches. You need to determine which switch operates the bulb. You can turn the switches on and off as many times as you wish (they are all off to begin with), but may only enter the room once. There is no one there to help you. The door to the room is closed, and there are no windows, so you cannot see inside. How can you discover which switch operates the bulb?
Submitted by: AdministratorDo the following steps:
☛ 1. Turn ON two switches, and leave one OFF.
☛ 2. Wait a few minutes.
☛ 3. Turn one switch from ON to OFF. One is now ON and two are OFF
☛ 4. Enter the room. - If the light is ON, it is controlled by the switch you left ON. - If the light bulb is OFF, touch it. If it is warm it is controlled by the switch you turned ON and OFF. If it is cold, it is controlled by the switch you never turned on.
Submitted by: Administrator
☛ 1. Turn ON two switches, and leave one OFF.
☛ 2. Wait a few minutes.
☛ 3. Turn one switch from ON to OFF. One is now ON and two are OFF
☛ 4. Enter the room. - If the light is ON, it is controlled by the switch you left ON. - If the light bulb is OFF, touch it. If it is warm it is controlled by the switch you turned ON and OFF. If it is cold, it is controlled by the switch you never turned on.
Submitted by: Administrator
Read Online CAl Fire Job Interview Questions And Answers
Top CAl Fire Questions:
☺ | If you were an animal, which one would you want to be? |
☺ | If you look at a clock and the time is 3:15, what's the angle between the hour and the minute hands? |
☺ | What challenges are you looking for in this position? |
☺ | Describe a time when you put your needs aside to help a co-worker understand a task. How did you assist them? What was the result? |
☺ | You are not given the tools you need to be successful. How would you change that Regarding CAl Fire? |
Top Security Categories
☺ | Safety Officer Interview Questions. |
☺ | Security Guard Interview Questions. |
☺ | Information Security Officer Interview Questions. |
☺ | Sheriff Interview Questions. |
☺ | Protocols Officer Interview Questions. |