Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
We know that,
P=VI
I = `"P"/"V" = (5 xx 1000)/200` = 25A
Thus, safe limit of current through t he appliance is 25A and a fuse of rating BA cannot be used with an appliance of rating SkW, 200 v.
APPEARS IN
संबंधित प्रश्न
You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?
An electrician has wired a house in such a way that if a lamp gets fused in one room of the house, all the lamps in other rooms of the house stop working. What is the defect in the wiring?
If the current passing through a conductor is doubled, what will be the change in heat produced
Name two effects produced by electric current.
The diagram shows two ways of connecting three lamps P, Q and R to A.C. supply of 220 V.


Complete the following table. The first answer has been given as an example.
| Quantity | Unit | |
| (a) | Electrical potential | volt |
| (b) | Resistance | ........ |
| (c) | Power | ........ |
| (d) | Energy | ........ |
| (e) | Resistivity | ........ |
A bulb is connected to a battery of p.d. 4 V and internal resistance 2.5 Ω . A steady current of 0.5 A flows through the circuit. Calculate:
The total energy supplied by the battery in 10 minutes
What should I choose ___________________
b. for getting protection from electric current.
c. to measure the current in the circuit?
