Advertisements
Advertisements
प्रश्न
A conductor of 10 Ω is connected across a 6 V ideal source. The power supplied by the source to the conductor is ______.
पर्याय
1.8 W
2.4 W
3.6 W
7.2 W
उत्तर
A conductor of 10 Ω is connected across a 6 V ideal source. The power supplied by the source to the conductor is 3.6 W.
Explanation:
Given: V = 6V, R = 10 Ω
Power, P = `V^2/R`
P = `(6)^2/10`
P = 3.6 watt
APPEARS IN
संबंधित प्रश्न
Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220 V?
The commercial unit of energy is :
(a) watt
(b) watt-hour
(c) kilowatt-hour
(d) kilo-joule
A battery of e.m.f 15 V and internal resistance 2 Ω is connected to two resistors of resistance 4 ohm and 6 ohm joined in series. Find the electrical energy spent per minute in 6 ohm resistor.
Fig . shows the essent ial features of a battery operated bell. The hammer strikes the gong when the swi tch is closed . State and explain the effect of using the following material successively to form the core.
(a) Plastic
(b) Steel
(c) Copper
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 supplied by the battery.
What is electric power? State and define its S.I. unit.
An electric kettle is rated 3kW, 250V. What should be the current capacity of the fuse with it?
A bulb is connected to a battery of e.m.f. 6V and internal resistance 2Ω A steady current of 0.5A flows through the bulb. Calculate the heat energy dissipated in the bulb in 10 minutes.
1 kWh is equal to:
