Electric Components and Their Symbols

Q.

Question 1 (b)

Fill in the blank:
An electric cell has ___ terminals.

Q.

What is the symbol of a closed switch?

Q.

It is easier to use symbols instead of using actual components while drawing an electric circuit.

1. True

2. False

Q.

A circuit is said to be open circuit or complete when current flows through it. True/ False.

Q. What is an open circuit

Q. The symbol shown in the figure below is a/an ________.

1. switch in ON position
2. electric wire
3. switch in OFF position
4. battery

Q. The following symbol in the figure represents an MCB fuse.

1. True
2. False

Q. To protect the electrical appliances the fuse wire in electric supply line is connected in

1. series
2. parallel
3. mixed order
4. none of the above

Q. Which of the following statements are true about the symbol given in figure below?

1. It represents a battery.
2. The longer lines indicate positive terminals.
3. The shorter lines indicate positive terminals.
4. It represents an electric fuse.

Q.

A battery is a series of _______ connected sequentially.

1. electric cells

2. switches

3. bulbs
4. fuses

Q. Consider the below circuit diagram.

Which of the following bulbs would glow, when the switch is in its OFF position?

1. All the bulbs would glow
2. None of the bulbs would glow
3. Bulb A
4. Bulbs B and C

Q. A __________ is a combination of two or more cells connected end to end.

1. Coil
2. Battery
3. Dynamo
4. Switch

Q. Current can only flow in a closed circuit. True or false?

Q. Draw the symbols used in a circuit for-a battery of four cells, a switch, a lamp.