Question

answer my questions ​

Answer 1

1)power=v x i

= 2v x 0.5 A

=1watt

resistance=v/i

=2/0.5=4ohm

2)energy consumed=heat produced

=i^2 RT

=5^2 x 10 x 3x60

=45000joules=45KJ

3)h=v^2t/R

=220^2 x 20x60/40

=1452KJ