Download App

Current Electricity — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsCurrent Electricity2 Marks
Question
An electric bulb is marked '100 W, 250 V'. What information does this convey?
✓

Answer

It means that if the bulb is lighted on a 250 V supply, it consumes 100 W electrical power (which means 100J of electrical energy is converted in the filament of bulb into the light and heat energy in 1 second).

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[2 Mark Question Answer]" from Current Electricity→Current Electricity — all question types→Physics STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

Give the relative ionizing power of α, β and γ radiations.
→
In an experiment. 17 g of ice is used to bring down the temp. of 40 g of water from 34°C to its freezing point. The sp. heat capacity of water is 4.25 J/g°C. Calculate sp. latent heat of ice.
→
Write down a relation expressing the mechanical advantage of a lever.
→
Show, using a ray diagram, how a converging lens can be used to form a virtual image.
→
(a) State Ohm's law.
(b) What are the limitations of Ohm's law?
→
Which lens has more power: a thick lens or a thin lens?
→
A coin is places at the bottom of a beaker containing water (refractive index = 4/3) to a depth of 12 cm. By what height the coin appears to be raised when seen from vertically above?
→
A transformer lowers e.m.f. from 220 V to 15 V. If 400 W power is given in primary, calculate (i) the current in primary coil and (ii) the current in secondary coil.
→
State two properties of ultra-violet radiations which differ from visible light.
→
What are conjugate foci?
→