فیزتک

Check this above image for a multiple choise quiz

1) First comases made up of _____________ called _____________.

2) What we call lodesstone now?

3) Name three feromagnetic materials?

4) Why steel has also magnetic properties?

5) In a magnet, which area is called magnetic pole?

6) What happen if you put two North poles together?

7) What will happen if a north pole and a south pole put together?

8) A piece of iron will be attracted to a magnet, why iron is not a magnet?

9) How can we know that two metals are magnets?

10) How we can magnetise a piece of iron?

11) Why a typical piece of iron is not a magnet?

12) What is a saturated magnet?

13) When we have a saturated magnet?

14) Write two types of magnetic material and give an example for each of them.

15) Why iron is a soft magnetic material?

16) Why steal is a hard magnetic material?

Chapter 5.3 _ Longman Physics 11-14 Questions

Check the above image for a multiple choise quiz

1) What is a diode? and draw its symbol.

2) Give one example of diode usage.

3) What is diffrence between LED and bulb?

4) What is the most common color of LED? How we can have a diffrent color?

5) An LED converts ____________ energey to ____________ energey.

6) How is an LDR structare?

7) Why semiconductors will allow some current to flow?

8) How a semiconeluetor could become a better conductor?

9) Give an example of LDR usage.

10) How a variable resistor control the size of o current?

11) Give an example of variable resistor?

12) How a dimmer switch can control the bightness of lights?

13) How a buzzer works? Give an example of buzzer usage.

14) How wires, plugs and sockets will be safe to touch?

15) Why we do not touch plugs and switches with wet hands?

16) If too high current flows through an electrical applince what might be happend and how we can protect that appliance about it?

17) What is fuse and how it can protect appliance about high current?

18) Why it is important that the correct fuse use in a plug?

19) We have a heater and we must use a proper fuse in it. Which one is better to chose?
A) 1A    B) 3A    C) 5A    D) 13A

20) How we can prevent of wasting electical energy in the National Grid?

21) In the National Grid by which appliance we can change the voltage?

22) Name two types of transformer and what is their usage

Chapter 5.2 _ Longman Physics 11-14 Questions

Check this link for a multiple choise quiz

1) What is electric current?

2) Why electricity flow through metals?

3) How can we have a simple electric current?

4) what pushes electron round the circuit?

5) What is conventional current?

6) What is electron flow?

7) What i short circuit?

8) What happen if we add more bulbs in a in a series circuit?

9) How we can have brighter bulb in a series circuit?

10) What is different between series & parallel circuit?

11) Why in a parallel circuit if one bulb  broken, the other will work?

12) What happen if we add more bulb in a parallel circuit?

13) we know that cells can also be put in parallel to each other. Is it useful?

Chapter 5

5.1

Questions Chapter 5 _ Longman Physics 11-14

1) What is an atom

2) Name particles in an atom and their charge.

3) Why an atom is electrically neutral?

4) Which particle ofa atom can be moved? Why?

5) How can have a plastic ruler with positive charge?

6) How can have a plastic ruler with negative charge?