Table of Contents
What is the answer to the light switch riddle?
Here it is: Open the door. If the light is on, then switch number 2 controls it. If the light is off, then go and feel the bulb with your hand. If the bulb is hot, then switch number 1 controls it, and if the bulb is cold, then switch number 3, the one you did not touch, controls it.
What is the third switch in my room for?
Three-way switches are commonly used to control a light fixture from two different locations. For example, a long hallway or stairway might use a pair of three-way switches at each end so that lights can be turned on when approaching one end of the hall or stairway, then shut off from the other end.
Can you have 3 light switches one light?
A light or lights can be controlled by more than one switch. The usual practice in home construction is to use 3-way switches. 3-way is the electrician’s designation for a single pole double throw (SPDT) switch. The switches must create a complete circuit for current to flow and the bulb to light.
What is the answer to the riddle with the clocks calculators and light bulbs?
The equation is 15 + 15 15 15, so each bulb with 5 lights is 15. A bulb with 1 light is 3, a bulb with 2 lights is 6, and so on. The last one has 1 clock that shows 9 o’clock plus 1 calculator which has ‘1224’multiplied by 3 bulbs where each has 4 lights. This comes to: 9 + 9 X 36 9 + 324 333.
What is the final state of bulb No 64 and how many of the light bulbs are illuminated after the 100th person has passed through the room?
Light Bulb 64 is on. The total number of bulbs which are on including #64 is 10. First think who will operate each bulb, obviously person #2 will do all the even numbers, and say person #10 will operate all the bulbs that end in a zero.
How many lightbulbs are turned on at the end?
Let’s realize what we discovered. If there’s no randomness, then we’ll get 10 light bulb that are turned on in the end. If there’s a 5050 chance to press the switch, then we’ll get 50 light bulbs that are turned on.
Did a light bulb go off in your head?
a light bulb goes off in (one’s) head One is suddenly struck with an ingenious or inspired idea, insight, or revelation. In this expression, the phrasal verb go off means turn on or become active. We spent hours trying to come up with a solution, when suddenly a light bulb went off in my head.
Why is there an extra switch in my room?
It’s used to turn on a table lamp. Most of the time the upper half of an outlet powers the lamp while the lower half is ‘hot’all the time, for clocks, TVs and the like. Using a small lamp, go around the room and try all of the outlets. Leave the switch’off’, and go from outlet to outlet, top and bottom.
What does the extra light switch do?
3-way is the electrician’s designation for a single pole double throw (SPDT) switch. The switches must create a complete circuit for current to flow and the bulb to light. If one switch is up and one is down, the current reaches a dead end, no current flows and the bulb is off (top left and bottom left).
How does a 3 position switch work?
A 3-way switch is larger than a single pole switch and has three screw terminals for wiring connections, plus a ground. Two of these take traveler wires that go from one switch to the other. For the third terminal, one switch is connected to the hot supply wire while the other switch is joined to the light.
How do you wire 3 switches to the same light?
Four-way switches are used to control lighting from three or more locations. When the switch is in the up position, the current can flow through two terminals. In the down position, the current flows through the other two terminals.
Can a light be controlled by 4 switches?
There is no limit to the number of lights on a circuit. The load of the fixtures is what determines how many lights a circuit can accommodate. A conventional 15A circuit can have up to 1400W of lighting loads connected to it. A 1400 Watts lighting load can accommodate one 1400W fixture or fourteen 100W fixtures.
How many light switches can you have on a circuit?
You run a pair of travellers, from one 2-way switch to the intermediate switch. Then you run another pair of travellers from the other 2-way switch to the intermediate switch. When you run the cables like this,you will be able to control a light from three locations.
How do you solve a lightbulb puzzle?
Here it is: Open the door. If the light is on, then switch number 2 controls it. If the light is off, then go and feel the bulb with your hand. If the bulb is hot, then switch number 1 controls it, and if the bulb is cold, then switch number 3, the one you did not touch, controls it.
What is the answer to the clock and light bulb riddle?
Let’s realize what we discovered. If there’s no randomness, then we’ll get 10 light bulb that are turned on in the end. If there’s a 5050 chance to press the switch, then we’ll get 50 light bulbs that are turned on.
What is the end of a light bulb called?
Therefore, one bulb with one light 3. Bulb with four lights 4 x 3 12. 9 + 9 x 36 9 + 324 333. Answer to ‘Watch Calculator bulb’puzzle is 333.
What numbers are light bulbs?
Thin glass forms the exterior of the bulb, called the globe. It contains the filament which gives off light, a stem, which holds the filament, and a metal base that screws into a socket, such as in a lamp or ceiling fixture.
What is the answer to the light bulb Riddle?
Here it is: If the light is on, then switch number 2 controls it. If the light is off, then go and feel the bulb with your hand. If the bulb is hot, then switch number 1 controls it, and if the bulb is cold, then switch number 3, the one you did not touch, controls it.
How many times does a bulb switch on and off in a second?
When using alternating current power, the flow of electricity changes direction either 60 or 50 times per second. It changes from ON in one direction to ON in the opposite direction and is OFF for 1/60th or 1/50th of a second. In fluourescent bulbs it causes flicker.
How many times does a light bulb flash in a second?
Hence a bulb blinks twice the time of hertz supplied by AC power system. i.e for 50 hz it will blink 100 times per second and for 60 Hz it will blink 120 times per second.
When a light bulb goes off in your head?
a light bulb goes off in (one’s) head One is suddenly struck with an ingenious or inspired idea, insight, or revelation. In this expression, the phrasal verb go off means turn on or become active. We spent hours trying to come up with a solution, when suddenly a light bulb went off in my head.
Can your brain turn on a light bulb?
Your brain generates enough electricity to power a lightbulb. And while a single neuron generates only a tiny amount of electricity, all your neurons together can generate enough electricity to power a low-wattage bulb.
When the light goes off meaning?
Here it is: If the light is on, then switch number 2 controls it. If the light is off, then go and feel the bulb with your hand. If the bulb is hot, then switch number 1 controls it, and if the bulb is cold, then switch number 3, the one you did not touch, controls it.
What is the second switch in my room for?
The second switch connects to one or the other of the two wires from the first switch and outputs to the light. If the second switch is connected to the intermediate wire that has power, the light turns on. If it connects to the intermediate wire that has no power, the light is off.
Why is there a light switch in my room that does nothing?
You may have a switch that seems to go to nothing and an outlet that does not work, often this is because the electrical outlet is a switched outlet. Also called a half-hot or lamp outlet, one receptacle will always be ready to give power while you can control the other one with a switch.
