220 J of heat is dissipated by a heating element when 0.5 A current flows through it for 10 s.Calculate its resistance
Answers
Answered by
6
Solution :
Given :-
Heat produced = 220J
Current flow = 0.5A
Time interval = 10s
To Find :-
Resistance of heating element.
Formula :-
Formula of heat energy produced by electrical instrument in terms of current flow, resistance and time is given by
- H denotes heat energy
- I denotes current flow
- R denotes resistance
- t denotes time interval
Calculation :-
Answered by
1
H = I²Rt
H = 220J
I = 0.5A
t = 10s
H = I²Rt
R = H/I²t
R = 220/(0.5)²*10 = 22/0.25 = 2200/25 = 88 ohm
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