مستعينا بدائرة الاوميتر الداخلية الموضحة بالشكل وماعليها من

بيانات وضح الغرض من وجود المقاومة المتغيرة

6565 اوم مع استنتاج القيمة المطلوبة منها لتحقيق هذا الغرض

دائرة كهربية مكونة من بطارية قوتها الدافعة الكهربية 2 فولت ومقاومةقيمتها 150 اوم بما فى

ذلك المقاومة الداخلية للبطارية وجلفانومتر مقاومته 56 اوم وصل طرفا الجلفانومتر بمجزئ يسمح

بمرور 1/5 التيار الكلى فى الجلفانومتر..احسب شدة التيار الكلى الماء فى الدائرة وكذلك التيار

المار فى كل من الجلفانومتر والمجزئء

4-1. Who were the first people to do many things ? .............................

a. The Chinese b. The Ancient Egyptians c. The Indians

2. What was probably the world's first lighthouse ? ..............................

a. Dubai Lighthouse b. New York Lighthouse c. Alexandria Lighthouse

3. How tall was the Alexandria Lighthouse ? ..................................

a, 131 m b.130 m c.133 m

4-When did it open ?............................

a.283 BCE b.238 BCE c. 288 BCE

3-1. What does tobacco in cigarettes contain ? .............................

a. A dangerous chemical b. A healthy chemical c. A tasty chemical

2. What can't people who smoke do ? .................................

a. Run b. Eat c. Drink

3. What does the chemical in cigarettes damage ?..........................

a.Arms b. Hands c. Lungs

4. Who can't breathe well ?.............................

a. Smokers b. Traders c. Teachers

1. Listen and choose the correct answer from a, b or c:

1. Where does rubber come from ...............................

a. Olive trees b. Rubber trees c. Banana trees

2. What is some rubber made from ?.............................

a. Oil b. Wood c. Coal

3. What thing is made of rubber ?...............................

a. A tennis ball b. A box c. A toy train

4-Where do we use rubbers ?..........................

a. At school b. At the cinema c. At the office

1. Listen and choose the correct answer from a, b or c:

1- 1. Where was Dr. Farouk El Baz born? ……………………………….

a, Zagazig b. Benha c. Mansoura

2. What did he learn about at school ? ………………………………….

a. Geography b. Science c. History

3. Which university did he go to ? ………………………. University.

a. Cairo b. Kafr El Sheikh c. Ain shams

4. When was he born ? In ………………………………….

a. 1988 b. 1983 c. I938

جلفانومتر حساس ملفه 4\Omega واقصى تيار يتحمله 1mA وصل ملفه بمقاومة على

التوازى مقادرها 1\Omega ليكونا معا جهازا واحدا ثم وصل هذا الجهاز على التوالى بمقاومة مقدارها

999.2\Omega ليكونا فولتميتر ...... احسب اقصى فرق جهد يمكن ان يقيسه هذا الفولتميتر

Choose the correct answer:

1- The Iron Man listened to the dragon's ( song – story – history – poem ) while eating.

2- The dragon flew around the ( earth – room – house – sea ) and sang every night.

3- The Iron Man became a ( man – boy – hero – enemy ).

4- The earth became a ( sad – bad – sorry – happy ) place.

1- Why did the dragon obey the Iron man?

2- Why do you think that the dragon wanted to frighten the people ?

3- What did the dragon do to show he was sorry?

4- Why did the people like the Iron Man?

5- Why did the people send the Iron Man's old cars , fridges and nails?

6- Why do you think that the earth became a happy place?

1- ( Italy – England – France – Australia ) is a very hot country in the south of the world.

2- The dragon flew ( down – up – in – of ) to the ground.

3- The ( donkey – cow – dragon – horse ) breathes fire and it can fly.

4- When will the plane ( land – ground – earth – sleep )

5- Birds have two ( tails – wings – mouths – bodies ) which help them fly.

6- The dragon was too ( small – tiny – huge – light )

7- Hogarth wanted the Iron Man to ( play – build – destroy- sing ) the dragon.