In the pic above, is the answer correct? If yes please explain how beacuse by joule's law of heating heat produced is directly proportional to resistance. I will mark as brainliest...
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Solution:
in all the circuits, voltage is same , i.e. V = 12 V
And so,
heat = (V^2)t / R ....... (1)
heat is inversely proportional to resistance taking V and t same for all circuits.
in circuit (i) -. R = 2 ohm
in circuit (ii) -. R = 4 ohm (series)
in circuit (iii) -. R = 1 ohm (parallel)
hence, heat will be maximum in circuit (iii)..
mallasurekaveri:
what abt that
here, V is same for all. so I have taken this relationship
acc. to that circuit (ii) produces most heat
ok thanks for answer
you are right, but if you finding current then you should consider resistance that is also different for different circuits given here
oh right
thank u so much
in joules heating equation, if resistances are same then heat will be directly proportional to current or vice-versa.
welcome
ok
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