Question

Fill in the blanks:
(a) Current does not flow in an _______ electric circuit.
(b) Electric bell is based on the _______ effect of current.
(c) ________ is an electric component which is used to open or close an
electric circuit.
(d) S.I. unit of speed is __________.
(e) Distances between two cities are measured in_________.

Answer 1

Answer:

$\huge\underline\mathbb\blue{Answer:-}$

1-(a)Current doesn't flow in an opened circuit.

Explanation:-

because the current is stopped where the switch is started or ended

(b)heating effect

Explanation:-

because the collision of positive and negative charges produce heat

(c)switch

which is mainly made from Bakelite

(d)metre per second(m/s)

Explanation:-

the S.I. unit is m/s,but the most commonly used unit in our life is Kilometer per hour(km/h). In UK and USA the unit is miles per hour[mph)

(e)kilometers

Explanation:-

because the distance may be too long between cities so it can't be measure in meter so we usually uses kilometers or sometimes miles