an electric bulb of resistance 480 ohm is connected to a 220 volt mains find the amount of electrical energy consumed in 10 seconds
Answers
Answered by
2
Ans.
1008.33j
As, H=i2RT
1008.33j
As, H=i2RT
nkk47:
whats b and s
in this is h=?
i=?
r=220v
t=10s
10
Answered by
8
but tell me is this any formula?
and can it be used as 10th board exam?
H = l^2 ×R × t. then replace l by V/R.
ok
but why we have to replace i by v/r
because we know potential difference and resistance but not current so we replace I by v divide by R
v/r is any formula?
V = l / R ( ohms law )
l = V / R
sorry ,V = l×R (ohms law)
Similar questions