|
 Electricity: Circuits and their Component 38 Flashcards |
Start
|
|
What is a torchlight commonly used for? |
Card: 1 / 38 |
|
|
A torchlight is commonly used to produce light and see in the dark. |
Card: 2 / 38 |
|
|
The main components of a torchlight include a lamp, a switch, and ___ . |
Card: 3 / 38 |
|
|
Electric cells. |
Card: 4 / 38 |
|
|
True or False: An electrical circuit allows electric current to flow in a complete loop. |
Card: 5 / 38 |
|
|
 True. |
Card: 6 / 38 |
|
|
When the switch of a torchlight is in the 'off' position, what happens to the lamp? |
Card: 7 / 38 |
|
|
The connection is broken, and the lamp stays off. |
Card: 8 / 38 |
|
|
What is the primary function of the switch in a torchlight? |
Card: 9 / 38 |
|
|
|
Card: 10 / 38 |
The switch controls the flow of electricity to the lamp, turning it on or off.
|
|
What are the two types of terminals found in every cell, and how are they marked? |
Card: 11 / 38 |
|
|
Every cell has two terminals.
|
Card: 12 / 38 |
|
|
Fill in the blank: The function of a cell is to provide the energy needed to make devices work by allowing current to flow from the ___ terminal to the ___ terminal. |
Card: 13 / 38 |
|
|
 Positive, negative terminal of cell |
Card: 14 / 38 |
|
|
True or False: A battery is formed by connecting two or more electric cells in such a way that the positive terminal of one cell connects to the positive terminal of the next cell. |
Card: 15 / 38 |
|
|
False. A battery is formed by connecting the positive terminal of one cell to the negative terminal of the next cell. |
Card: 16 / 38 |
|
|
Riddle: I am a combination of cells that powers your devices longer; my terminals connect in a chain. What am I? |
Card: 17 / 38 |
|
|
 A battery. |
Card: 18 / 38 |
|
|
What is the main structural feature of an incandescent lamp that allows it to produce light? |
Card: 19 / 38 |
|
|
 Unlock all Flashcards with EduRev Infinity Plan Starting from @ ₹99 only
|
|
|
|
An incandescent lamp has a glass bulb with a thin wire called a filament inside, which gets hot and glows when electric current flows through it. |
Card: 20 / 38 |
|
|
Fill in the blank: The fascinating fact about the term 'battery' is that it is often used to refer to a ___ cell, like the one in a mobile phone. |
Card: 21 / 38 |
|
|
Single |
Card: 22 / 38 |
|
|
Short answer: How does the electric current affect the filament in an incandescent lamp? |
Card: 23 / 38 |
|
|
 The electric current flows through the filament, causing it to heat up and glow, producing light. |
Card: 24 / 38 |
|
|
What happens to a lamp when its filament breaks? |
Card: 25 / 38 |
|
|
When the filament breaks, the lamp 'fuses,' stopping the current flow and preventing the lamp from glowing. |
Card: 26 / 38 |
|
|
A Light Emitting Diode (LED) lamp has two wires; what distinguishes the positive terminal from the negative terminal? |
Card: 27 / 38 |
|
|
The positive terminal is distinguished by being the longer wire, while the negative terminal is the shorter wire. |
Card: 28 / 38 |
|
|
LEDs glow only when connected correctly to a battery. Fill in the blank: The positive terminal of the LED must connect to the battery's ___ terminal. |
Card: 29 / 38 |
|
|
 Positive |
Card: 30 / 38 |
|
|
True or False: An LED lamp can glow regardless of the direction of current flow. |
Card: 31 / 38 |
|
|
|
Card: 32 / 38 |
False. An LED lamp glows only when current flows in one direction.
|
|
What is one reason many modern torchlights use LED lamps? |
Card: 33 / 38 |
|
|
 Many modern torchlights use LED lamps because they are efficient and long-lasting. |
Card: 34 / 38 |
|
|
Riddle: I have no filament but can light up your way. I only glow when you connect me the right way. What am I? |
Card: 35 / 38 |
|
|
 An LED lamp. |
Card: 36 / 38 |
|
|
True or False: The electric wires in a circuit are used to connect the lamp directly to the electric cell's terminals. |
Card: 37 / 38 |
|
|
 True |
Card: 38 / 38 |
|
|
Completed! Keep practicing to master all of them. |
Restart
|
