Table of Contents
- 1 How many combinations of 3 lightbulbs are there?
- 2 How many light bulbs are turned on at the end?
- 3 In which circuit will the bulb light up why?
- 4 How do you find the switch of three bulbs placed inside with the switches outside?
- 5 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?
- 6 What may happen if the filament of one of the bulbs in your first setup melts Why?
- 7 Does the bulb light when the magnet is inserted inside the coil?
- 8 Are there 3 bulbs and 3 switches in a room?
- 9 How many light bulbs are in a room 7?
- 10 Do you have to switch light bulbs 1 and 2?
How many combinations of 3 lightbulbs are there?
With 3 light bulbs, we get 8 combinations representing the numbers from 0 to 7.. With 4 light bulbs, 16 combinations representing the numbers 0 to 15. There is a definite pattern here, and it is important to remember it.
How many light bulbs 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 50–50 chance to press the switch, then we’ll get 50 light bulbs that are turned on.
What happened to the light bulb when the switch was on?
When the switch is open, the light cannot operate since the circuit is not complete. When the switch is closed, the light bulb operates since the current flows through the circuit. The bulb glows at its full brightness since it receives its full 120 volts and has the design current flow (Figure 1).
In which circuit will the bulb light up why?
Both the metal casing and tip of the bulb are connected to the circuit, forming a closed circuit. Thus, electricity is able to flow through the wires in the circuit to the filament, allowing the bulb to light up.
How do you find the switch of three bulbs placed inside with the switches outside?
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 different combinations of on and off are possible with 4 light switches?
sixteen combinations
Answer: Four switches gives us sixteen combinations.
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?
And how many of the light bulbs are illuminated after the 100th person has passed through the room? Right first the answers: Light Bulb 64 is on. The total number of bulbs which are on including #64 is 10.
What may happen if the filament of one of the bulbs in your first setup melts Why?
On melting of filament in the bulb, the circuit will break and hence will not be able to conduct electricity. Thus, the rest connected bulbs will not glow.
How many bulbs does a series circuit have?
Consider a very simple circuit consisting of four light bulbs and one 6 V battery. If a wire joins the battery to one bulb, to a second bulb, to a third bulb, then back to the battery, in one continuous loop, the bulbs are said to be in series.
Does the bulb light when the magnet is inserted inside the coil?
Whenever you bring coils and magnets together (in the proper orientation and moving with respect to each other), magic happens. In this case, it is the Edisonian magic of lighting a light bulb. This induced current can be used to power the light bulb. …
Are there 3 bulbs and 3 switches in a room?
3 bulbs and 3 switches. There are 3 bulbs(B1, B2 and B3) in a room on 1st floor, they can be operated using 3 switches(S1, S2, S3) present on the ground floor. You don’t know which Switch is for which bulb. How can you figure out, which switch is for which bulb if you are allowed to visit 1st floor only once.
Are there 3 bulbs on the 1st floor?
There are 3 bulbs (B1, B2 and B3) in a room on 1st floor, they can be operated using 3 switches (S1, S2, S3) present on the ground floor. You don’t know which Switch is for which bulb. How can you figure out, which switch is for which bulb if you are allowed to visit 1st floor only once.
How many light bulbs are in a room 7?
Answer to Riddle #7: Three Light Bulbs & Switches in a Room 7. A windowless room contains three identical light fixtures, each containing an identical light bulb or light globe. Each light is connected to one of three switches outside of the room. Each bulb is switched off at present.
Do you have to switch light bulbs 1 and 2?
It doesn’t have to be switches 1 & 2 you flick, any two will be fine, so long as you can remember which. There is another possible answer, this involves switching on 1, then waiting a while and switching on 2. When you get in to the room two of the bulbs will be on but one will be much hotter.