Two heaters A and B each working with 230V for 5 minutes generates heat energy. Heater A has resistance 100 ohm and Heater B has resistance 1000 ohm.Which heater will generate more heat?
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Two heaters A and B each working with 230V for 5 minutes generates heat energy. Heater A has resistance 100 ohm and Heater B has resistance 1000 ohm.Which heater will generate more heat?
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Verified answer
Answer:
100kJ
R
1
V
2
t=500 and
R
2
V
2
(
2
t
)=1000
⇒
R
1
2R
2
=
2
1
⇒R
2
=25 Ω
When the heaters are connected in series, heat produced
=
125
V
2
×5×60
=
25×2×6
500×10
3
×60=10
5
J
=100 kJ