Question

1. Mark ‘T' if the statement is true and ‘F’ if it is false. 1×5=5

a) Faster vehicle has a higher speed.

b) The basic unit of time is second.

c) It is convenient to represent electric components by symbols.

d) An electric Bell has an electromagnet.

e) When the electric current through the fuse exceeds a certain limit the fuse wire melt

and breaks.

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 ……… .

3. ANSWER THE FOLLOWING QUESTIONS 2×5=10

a) A simple pendulum stakes 32s to complete 20 oscillations. what is the time period of the

pendulum?

b) Athouba takes 15 minutes from his house to reach school on a bicycle. If the bicycle has speed of

2 m/s. Calculate the distance between his house and school?

c) Show the shape of the distance -time graph for the motion in the following .

i) A car moving with a constant speed.

ii) A car park on a roadside.

d) Name any two side effects of electric current ?

e) When the current is switched on through a wire, a compass needle kept nearby gets deflected

from its north-south position. Explain?​

Answer 1

Answer:

1. T

2.F

3.T

4.T

5.F