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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 anelectric circuit.(d) S.I. unit of speed is __________.(e) Distances between two cities are measured in_________. |
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Answer» 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 |
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