In order to increase the current capacity

a) Cells are connected in series

b) Cells are connected in parallel

3. Make up sentences, using words and word-combinations.

Capacitor, insulator, isolate, store, apply, move, great, frequency, prevent from, distance

Additional material for card № 5

1. Read the text, translate it and answer the questions.

Electric cells

An electric cell is used to produce and supply electric energy. It consists of an electrolyte and to electrodes. Electrodes are used ass terminals, they connect the cell to the circuit – current passes through the terminals and the bulb lights.

Cells can be connected in series, in parallel and in series-parallel. In order to increase the current capacity cells should be connected in parallel. In order to increase the voltage output cells should be connected in series. In case a battery has a large current capacity and a large voltage output, its cells are connected in series-parallel. When cells are connected in parallel their negative terminals are connected together and their positive terminals are also connected.

1. What is the function of electric cell?

2. What does an electric cell consist of?

3. How to connect electric cells?

2. Find the correct variant.

A capacitor is used

a) To supply voltage

b) To increase the voltage output

c) To store energy

The main parts of a capacitor are

a) Insulators only

b) Metal plates only

c) Metal plates and insulators between them

The function of insulators is

a) To store energy

b) To isolate the metal plates

c) To prevent a short between the metal plates

The capacity of a fixed capacitor

a) Is constant

b) Is varied

The capacity of a capacitor depends on

a) the size of plates

b) the distance between the plates

c) the material of the insulator

3. Make up sentences, using words and word-combinations.

Silver, copper, coefficient, cheap, so that, widely, decrease, call, wire conductors, copper conductors

Additional material for card № 6

1. Read the text, translate it and answer the questions.

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