Symbols of Electric Components

Q. The instrument used for measuring electric current is called ________.

1. ammeter
2. voltmeter
3. power meter
4. resistor

Q.

Question 10

You are provided with a bulb, a cell, a switch and some connecting wires. Draw a diagram to show the connections between them to make the bulb glow.

Q.

What is the difference between terminal voltage and e.m.f?

Q. Symbol of a battery is:

1. 
2. 
3. 
4. 

Q.

Question 8 (b)
The combination of two or more cells is called a ___.

Q.

Name the instrument used to measure electric current. [1 MARK]

Q.

Which of the following is symbol of bulb?

1. 

2. 

3. 

4. 

Q.

Question 8 (a)
Longer line in the symbol for a cell represents its ___ terminal.

Q.

Question 9 (a)
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(a) To make a battery of two cells, the negative terminal of one cell is connected to the negative terminal of the other cell.

Q.

Question 2
Draw the circuit diagram to represent the circuit shown in Fig:

Q. The metal disc of an electric cell is the ___ terminal.

1. positive
2. neutral
3. negative
4. None of the above

Q.

Question 9

Unscramble the following words:
(i) TBTAYER
(ii) SFEU
(iii) HTRCO
(iv) HICWTS

Q.

Each memory cell has a unique number assigned to it, called as the _________ of the cell.

Q.

Question 1
Draw the symbols to represent the following components of electrical circuits:
Cell, bulb, switch in the ‘ON’ position, switch in the ‘OFF’ position and battery.

Q.

The device which measures electric current is called ___

Q.

Question 3
Figure shows four cells fixed on a board. Draw lines to indicate how you will connect their terminals with wires to make a battery of four cells.

Q. ntA battery of emf 100V and a resistor of resistance 10 kilo-ohm are joined in series. This system is used as a source to supply current to an external resistance R. If R is not greater than 100 ohm, the current through it is constant up to two significant digits. Find its value.n ntn ntHc 199n

Q.

Following symbol of switch represents closed circuit.

1. True

2. False

Q. Which of the following device can be used to open or close an electric circuit to regulate the flow of current?

1. Switch
2. Electric Cell
3. Bulb
4. Electromagnet

Q. ___ is the device which controls (prevents or allows) current to flow through it.

Q. Match the following electric components.

1. Switch
2. Bulb
3. Cell

Q.

How can we protect the galvanometer?

Q. Draw the circuit diagram to represent the circuit shown in Fig. Will the bulb glow? [3 MARKS]

Q.

Which of the following correctly represents a battery?

1. 

2. 

3. 

4. 

Q.

A switch in an electric circuit can be made of plastic

1. True
2. False

Q. Which among the following symbols correctly represents the given diagram?

1. 
2. 
3. 
4. 

Q. The device which measures electric current is called ___.

Q. Draw the symbols to represent the following components of electric circuits: Cell, bulb, switch in the ‘ON’ position, switch in the ‘OFF’ position, and battery.

Q.

Two or more cells can be joined together to form a ______________.

1. motor

2. battery

3. transistor

4. resistor

Q.

In order to make a battery from two or more cells, the positive terminal of one cell is connected to the negative terminal of the next.

1. True

2. False