a solid rod iron draws energy of 45000 j in 4 min when the current flowing throught its element is 6A . calculate the resistance of its heating element.
Answers
Answered by
69
The correct answer will be... 5.20 ohm
Suppose that ...
t = 240s (4 minute = 240 seconds)
I = 6 A
H = 45000
Let us find from the equation….
H = I²Rt
45000 = 6² × R × 240
45000 = 36 × R × 240
45000 = R × 36 × 240
45000 = R × 8640
R = 4000/8640
R = 5.20 ohm
Therefore resistance of heating element is 5.20 ohm.
Answered by
15
Above mentioned is absolutely correct answer.
Similar questions