Advertisements
Advertisements
प्रश्न
‘The current rating of a fuse is 5A’. Comment on this statement.
Advertisements
उत्तर
This statement means that the current in the circuit should not Exceed 5A. As the current in circuit will Exceed 5A, the fuse will melt and the circuit will break.
APPEARS IN
संबंधित प्रश्न
Electrical power P is given by the expression P = (Q × V) ÷ time. What do the symbols Q and V represent?
Name the S.I. unit of electrical energy. How is it related to Wh?
Tick(✓) the correct choice in the following:
In the circuit shown in the following fig, the e.m.f. of the cell is 4 volts, the current
flowing through the resistor is

Name the physical quantity which is measured in kW.
Two resistors A and B of 4 Ω and 6 Ω, respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate the power dissipated in each resistor.
Express watt hour and kilowatt hour in joule.
Two electric lamps each rating 100 W, 110 V are connected in series to a 220 V power supply and two other electric lamps each of marking 100 W, 220 V are connected in parallel to the same power supply. Will anyone of the two combinations give more light than the other? Give a reason for your answer.
An electric bulb is rated as 100W – 250V. What information does it convey? Calculate the current through the filament of the bulb.
The electrical power and current in the circuit relates by ______
