हिंदी

Three Heaters Each Rated 250 W, 100 V Are Connected in Parallel to a 100 V Supply.

Advertisements
Advertisements

प्रश्न

Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply. The resistance of each heater

योग
Advertisements

उत्तर

Given ,

Power , P = 250 W

Voltage , V = 100 V

Resistance for each heaters `"R"  = "V"/"I"`

`= 100/2.5 = 40  Omega`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?

संबंधित प्रश्न

An electric bulb of resistance 20 Ω and a resistance wire of 4 Ω are connected in series with a 6 V battery.
Draw the circuit diagram, and calculate:

(a) total resistance of the circuit.
(b) current through the circuit.
(c) potential difference across the electric bulb.
(d) potential difference across the resistance wire.


Calculate the equivalent resistance between A and B in the adjacent diagram.


A battery of e.m.f. 15 V and internal resistance 3 ohm is connected to two resistors of resistance 3 ohm and 6 ohm in series. Find:
(i) The current through the battery,
(ii) The p.d. between the terminals of the battery.


Two resistors of 4 Ω and 6 Ω are connected in parallel. The combination is
connected across a 6 volt battery of negligible resistance. Calculate:
( i) The power supplied by the battery,
(ii) The power dissipated in each resistor.


Which type of current does a generator with commutator produce?

What do you mean by short-circuiting?

The diagram shows two ways of connecting three lamps P, Q and R to A.C. supply of 220 V.

Name the two arrangements. Which of them would you prefer in a household circuit? Give a reason for your answer.

An electric oven is rated as 1.5 kW, 250 V. If it is connected to a 250 V mains, calculate the
(a) Current drawn,
(b) Energy consumed in 20 hours,
(c) Cost of energy consumed in 20 hours at the rate of Re. 1 per unit.


What should I choose ___________________

a. for decreasing resistance in a circuit.
(Resistors in series / Resistors in parallel)

b. for getting protection from electric current.
(Nickel / Ebonite)

c. to measure the current in the circuit?
(Ammeter/ Voltmeter) 

What is the speed of electric current?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×