Question

2.FILL IN THE BLANKS. 1×5=5

a) The basic unit of speed is ………

b) Longer line in the symbol for a cell represents it's ……….. terminal .

c) The combination of two or more cells is called a ……….. .

d) The safety device based on the heating effect of electric current is called a …………. .

e) In a simple pendulum the metallic ball suspended by a thread is called its ……… ​

Answer 1

Answer:

1.km/hr or m/s

2. positive.

3.battery.

4.fuse

5.bob

Answer 2

Answer:

1. The SI unit of speed is the metre per second.

2. In the symbol of the electric cell, the longer line represents the positive terminal and the thicker, shorter line represents the negative terminal.

3. the combination of two or more cells is called a battery.

4. The safety device based on the heating effect of electric current is called a fuse.

5. A simple pendulum consists of a small metallic ball or a piece of stone suspended from a rigid stand by a thread. The metallic ball is called the bob of the pendulum.

Explanation:

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