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Задание 4

1. Free electrons
2. Positive charge
3. Static electricity
4. Direct current
5. Alternating current
6. Solid state

1. Solid state, Positive charge
2. Free electrons
3. Positive charge
4. Static electricity
5. Direct current
6. Alternating current

Use of English

Задание 5

1. C
2. B
3. C
4. B
5. B
6. A
7. C
8. B

Задание 7

1. Electricity C
2. Electromagnetism E
3. Electric field D
4. Magnetic field F
5. Voltage G
6. Quantum mechanics A
7. Quantum electrodynamics H
8. Conductor I
9. Insulator B

ЗАДАНИЕ 8

1. Written
2. Being held
3. Being
4. Equipped
5. Having worked
6. As shown
7. If not having been tested
8. While heating
9. After having not been accepted

• Supplying

Reading 1

2. Read the text and answer the following questions.
3. Define the term electrical circuit. An electric circuit is a closed loop network which provides a return path for the flow of current.
4. What are the basic components of electrical circuits? Every circuit is comprised of three major components: a conductive «path,» such as wire, or printed etches on a circuit board; a «source» of electrical power, such as a battery or household wall outlet, and, a «load» that needs electrical power to operate, such as a lamp.
5. Name the basic types of circuits. There are actually 5 main types of electrical circuits: Close circuit, open circuit, short circuit, series circuit, and parallel circuit. Each type of circuit is designed to create a conductive path of current or electricity.
6. Explain how voltage differs between a series circuit and a parallel circuit. In a series circuit, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component. In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.
7. Explain how current differs between a series circuit and a parallel circuit. In a series circuit, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component. In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.
8. Explain how resistance differs between a series circuit and a parallel circuit. For one, the total resistance of a Parallel Circuit is NOT equal to the sum of the resistors(like in a series circuit). The total resistance in a parallel circuit is always less than any of the branch resistances. Adding more parallel resistances to the paths causes the total resistance in the circuit to decrease.