The current through a resistor in an a.c circuit is given as 2 sin wt. Determine the d.c. equivalent of the current
\(\frac{1A}{\sqrt{2}}\)
\(\sqrt{2}\)A
2 A
2\(\sqrt{2}\)A
Explanation
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Discussions (19)
Why is myschool selecting a different answer from what they solved? Don't they know that (2/root A) that they ticked correct is diffrent from (2/root 2) that they solved?
The answer is D because (2/root 2) equals root 2 when rationalized.
Incomplete solution.
Rationalize the denominator!
2/√2 × √2/√2
[Multiply top and bottom by √2]
2√2/2
Simplifying correctly gives √2
B✔️👍🙈🙇🏽♂️😆
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pls what is the correct answer is it √2 or A/√2 cause option B is definitely not the answer
the answer is D
I = 2sinwt compare with I = I.sinwt
Irms = I. ÷ √2
I. = 2
Irms = 2. ×. √2
-----. ------
√2. √2
= 2√2
--------,
2 2 would cancel 2 and the answer
= √2
OR
Irms = 2. ×. √2
-----. ------
√2. √2, √2 cancels √2 and the answer is 2√2.
@myschool
i think there is supposed to be a modification here option B and D is correct
because 2/√2 is the same thing as √2 by
but sha las las na B sure pass because nobody asked is to rationalise
