Question

calculate heat produced in 2 hrs for 200 V and
100 W bulb.

Answer 1

Given

P= 100W

T= 2hrs

v= 200 v

P= V×I

100= 200× Current

current =0.5Amphere

By Ohms Law

V=current × Resistance

200 = 0.5 × resistance

resistance= 400ohms

H=I²RT

H = (0.5)² × 400 ×2

H = 200 Joules

Heat produced in a bulb is 200J .

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