Question:
How much heat is produced by 1500 Wheater in 7 min?
How much heat is produced by 1500 Wheater in 7 min?
Updated On: Jul 6, 2022
- 1.5 kcal
- 15 kcal
- 150 kcal
- 1500 kcal
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The Correct Option is C
Solution and Explanation
Heat produced H=$\frac {V^2t}{R \times J}$cal
$\hspace50mm$ $H=\frac {P.t}{J}$
$\hspace50mm$ $=\frac {1500 \times 7 \times 60}{4.2}$
$\hspace50mm$ $=1.5 \times {10}^{5}cal=150 kcal$
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Concepts Used:
Electromagnetic Induction
Electromagnetic Induction is a current produced by the voltage production due to a changing magnetic field. This happens in one of the two conditions:-
- When we place the conductor in a changing magnetic field.
- When the conductor constantly moves in a stationary field.
Formula:
The electromagnetic induction is mathematically represented as:-
e=N × d∅.dt
Where
- e = induced voltage
- N = number of turns in the coil
- Φ = Magnetic flux (This is the amount of magnetic field present on the surface)
- t = time
Applications of Electromagnetic Induction
- Electromagnetic induction in AC generator
- Electrical Transformers
- Magnetic Flow Meter