हिंदी

1 Calorie = _________ Joule. - Science and Technology 1

Advertisements
Advertisements

प्रश्न

1 calorie =  _________ joule.

उत्तर

1 calorie = 4.18 joule

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2017-2018 (March)

APPEARS IN

संबंधित प्रश्न

State two factors on which the electrical energy consumed by an electrical appliance depends.


What is the SI unit of (i) electric energy, and (ii) electric power?


Write the formula for electric power in terms of potential difference and current.


Calculate the cost of operating a heater of 500 W for 20 hours at the rate of Rs 3.90 per unit.


An electric bulb is rated ‘100 W, 250 V’. What information does this convey?


Two lamps, one rated 220 V, 50 W and the other rated 220 V, 100 W, are connected in serieswith mains of 220 V. Explain why does the 50 W lamp consume more power


An electric bulb is rated 250 W, 230 V. Calculate:

  1. the energy consumed in one hour
  2. the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.

The diagram below shows a magnetic kept just below the conductor AB which is kept in North South direction.

(i) In which direction will the needle deflect when the key is closed ?
(ii) Why is the deflection produced ?
(iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB ?
(iv) Name one device which works on this principle.


The diagram 31 shows a 3 terminal plug socket.
(i) What is the purpose of the terminal E?
(ii) To which part of the appliance is the terminal E connected?
(iii) To which wire L or N, is the fuse connected and why?


Two resistors A and B of 4 Ω and 6 Ω, respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate the power dissipated in each resistor.


Name three main characteristics of an heating element.


What is the order of current drawn by appliances connected to the ‘power circuit’ of a household?


Why is the electric power from the generating station transmitted at high voltage?


How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.


An electric heater is rated 220 V, 550 W. What does this statement mean?


How does earthing prevent electrical shock?


An Electric bulb is marked 100 W, 230 V. What current does it take?


A consumer uses 4 lamps of 60 watt, 2 lamps of 40 watt, and 2 lamps of 100 watt. All these are used for 6 hour daily. Find the total bill for 30 days when the rate of energy is 75 paise per unit and the meter rent is Rs. 1.


Using a long extension cord in which each conductor has a resistance of 8Ω, a bulb marked as '100 W, 200 V' is connected to a 220 V dc supply of negligible internal resistance as shown in the figure. The power delivered to the bulb is ______ W.

 


A conductor of 10 Ω is connected across a 6 V ideal source. The power supplied by the source to the conductor is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×