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 ______.
विकल्प
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 bulbs are rated 60 W, 220 V and 60 W, 110 V respectively. Calculate the ratio of their
resistances
Household wiring for lamp connections can either be done in parallel or in series.Which one would you prefer? Give a reason for your answer.
Which material is the calorimeter commonly made of? Give one reason for using this material.
What is the function of the split rings in a d.c. motor?
How does the heat produced by die passage of current in a metallic wire depend on the time of passage of current in the wire?
At what voltage is the electric power generated at the generating station? Explain the transmission of this power to your house.
Out of the three fuses with current ratings 5A, 10A, 15A, which one is to be connected in a geyser circuit marked 3 kW, 220V? Give reason for your answer.
The following table gives the electrical appliances used, their power and the average time for which they are used each day in a home. Estimate the monthly electricity bill if the rate is 60 paise per unit.
| Sr.no. | Name | Nos. | Power rating | Time/day |
| 1 | Bulb | 4 | 100 W | 7.5 hr |
| 2 | Fans | 2 | 50 W | 10 hr |
| 3 | T.V. | 1 | 100 W | 2 hr |
| 4 | Iron | 1 | 500 W | 1 hr |
| 5 | Electric stove | 1 | 750 W | 2 hr |
