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(1)(a) 10 W
= 0.796 W/m2
(c) P = I A = 0.796 × 1
= 0.796 W
(2) (a) 10 W
(b) = 0.00796 W/m2
(c) Area = A = 10 cm × 10 cm
= 0.1 m × 0.1 m
= 0.01 m2
P = IA = 0.00796 × 0.01
= 8.0 × 10-5 W
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