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प्रश्न
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उत्तर
We know that,
P=VI
I = `"P"/"V" = (5 xx 1000)/200` = 25A
Thus, safe limit of current through t he appliance is 25A and a fuse of rating BA cannot be used with an appliance of rating SkW, 200 v.
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संबंधित प्रश्न
Choose the correct alternative and rewrite the following sentence.
When the resistance of a conductor increases, the current will ________ increase.
Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an â’¶ on your diagram to show where an ammeter should be placed to measure the current.
Using the circuit given below, state which of the following statement is correct?
(a) When S1 and S2 are closed, lamps A and B are lit.22
(b) With S1 open and S2 closed, A is lit and B is not lit.
(c) With S2 open and S1 closed A and B are lit.
(d) With S1 closed and S2 open, lamp A remains lit even if lamp B gets fused.
Name two effects produced by electric current.
Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω
Find the effective resistance in the following circuit diagrams (Fig.):
If the potential differences between two parts of a thundercloud is 10s V,
what is the amount of energy given up during the passage of 20 coulombs?
(a)2x10-7J
(b)200J
(c)Sx106 j
(d)2x 109J
(e)2x 1010 J
______ is used to measure the electric current.
A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly
Find the odd one out.
Loudspeaker, Bar magnet/magnet, Electric motor, Microphone.
