Advertisements
Advertisements
प्रश्न
An electric kettle is rated 3 kW, 250 V. Give reason whether this kettle can be used in a circuit which contains a 13 A fuse.
संख्यात्मक
Advertisements
उत्तर
We know that,
P=VI
I = `"P"/"V" = (3 xx 1000)/250` = 12A
Thus, it can be used in a circuit which contains a 13A fuse.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? why?
How do you think the brightness of two lamps arranged in parallel compares with the brightness of two lamps arranged in series (both arrangements having one cell)?
Which effect of current is utilised in the working of an electric fuse?
Distinguish between an open and a closed circuit.
Match the pairs.
| ‘A’ Group | ‘B’ Group |
| 1. Free electrons | a. V/R |
| 2. Current | b. Increases the resistance in the circuit |
| 3. Resistivity | c. Weakly attached |
| 4. Resistances in series | d. VA/LI |
What do you mean by electric current?
What do you mean by A.C.?
What do you mean by short-circuiting?
What is the function of a step-up transformer?
