Electronics - Ohm's Law - Discussion

Discussion Forum : Ohm's Law - General Questions (Q.No. 18)
18.

What is the power in the given circuit?

3.92 kW
280 W
28.6 W
9.8 W
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
9 comments Page 1 of 1.

Niraj kumar said:   1 decade ago
v=i*r
i=v/r
i=14/20=0.7
W=V*I
W=14*0.7=9.8
(1)

Dan said:   1 decade ago
Where is the .7 from?
(1)

S.sanjay said:   10 years ago
What is the formula to calculate power?
(1)

Naren said:   1 decade ago
What about this formula p=i2*r ?

Vasu said:   1 decade ago
Can use the formula like p=i^2*r or power=(V^2)/R ??

Anyways the above problem can be solved.

Edgar said:   1 decade ago
What about the formula of p=e2/r

Dantheman said:   1 decade ago
Lets make this easy!

P = v^2/R.

14x14 = 196.

196/20 = 9.8W.

Pavan said:   9 years ago
p = i^2r this is right i=v/r a/c ohm's law.
p = 7/10 * 7/10 * 20.
p = 9.8W.

Omprakash said:   8 years ago
I=V/R.
I=24/20
I=0.7.

W=VI.
W=14*-0.7
W=9.

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