Electric Circuits

Q.

Which one of the following is not a network device?

1. Router

2. Switch

3. CPU

4. Hub

Q.

Conventionally, the direction of current is always taken as opposite to the direction of flow of __________.

Q.

Determine the direction of the conventional current.

Q. The path connecting electric components together is called an electric _________.

1. circuit
2. fuse
3. wire
4. bulb

Q.

What are the types of Batteries?

Q.
Which of the following should be placed in box 'X' to make the bulb glow more brightly?

1. Bulb
2. Switch
3. Cell
4. Fuse

Q. Cells connected to each other is known as ___.

1. battery
2. circuit
3. cell holder
4. bell

Q. Four cells are fixed on a board as shown below:

How will you connect the terminals with wires to make a battery of four cells?

1. A - Q, C - D, D - P
2. A - B, Q - R, C - S
3. P - B, R - S, Q - C
4. A - B, Q - R, C - D

Q. If the filament of a bulb is broken, then the bulb is said to be ___.

1. fused
2. brightened
3. dimmed
4. restrained

Q.

A battery is a connection of cells in __________.

1. parallel

2. a series

3. a random order

4. none of these

Q. Which of the following is the symbol of an electric battery?

1. 
2. 
3. 
4. 

Q. The device that is used to make or break the electric circuit is known as a _________.

1. bulb
2. switch
3. cell
4. wire

Q. The long line in the symbol of an electric cell represents its negative terminal.

1. True
2. False

Q. A cell is an example of conversion of:

1. Magnetic energy into chemical energy
2. Electrical energy into chemical energy
3. Chemical energy into electrical energy
4. Chemical energy into magnetic energy

Q.

Which device would you use to open and close a circuit?

1. Switch
2. Bulb
3. Fuse
4. Cell

Q. Why is electrical wiring usually made of copper, but not silver?

1. Copper is a better conductor than silver.
2. Copper is less magnetic compared to silver.
3. Copper is less expensive than silver.
4. Silver is an insulator.