Advertisements
Advertisements
प्रश्न
Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply of the energy supplied in kWh to the three heaters in 5 hours.
Advertisements
उत्तर
Given ,
Power , P = 250 W
Voltage , V = 100 V
Time for which energy is supplied , t = 5 h
As , Energy E = P × t
E = 250 × 5 = 1250 Wh
or E = 1.25 kWh
Energy for three heaters = 3 × 1.25 = 3.75 kWh
संबंधित प्रश्न
Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel.
(b) In the circuit diagram shown below, find:
(i) Total resistance.
(ii) Current shown by the ammeter A
What happens to the other bulbs in a parallel circuit if one bulb blows off?
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
(d) Which circuit would have less current in it?
A given wire of resistance 1 Ω is stretched to double its length. What will be its new resistance?
MCB is used to protect household electrical appliances.
Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
Assertion (A): Electric current will not flow between two charged bodies when connected if their charges are the same.
Reason (R): Current is the rate of flow of charge.
