Question

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? ​

Answer 1

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