Question

Resistance of a 230V heating device is 460 ohm.Calculate the heat energy produced by it in 10
minutes.

Answer 1

Answer:

69000J

Explanation:

Given,

Hv=230V

t=10min=10x60=600s

r=460Ω

H=?

I=v/r=230/460=0.5

H=l^2rt =(0.5)^2 x 460 x 600= 69000J

Answer 2

Answer:

69000 J

Explanation:

v =230 V

t=10 min =10 × 60 = 600

r= 460 ohm

h= ?

I = v/r

H =I ^2rt

= (0.5)^2 ×460 × 600

= 69000 J