R.m.s. or peak current from a given e.m.f. and resistance or power

1. A.
   0.2828 A
2. B.
   2.828 A
3. C.
   28.28 A
4. D.
   282.8 A

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1. A.
   10 A
2. B.
   $5\sqrt{2}\ \text{A}$
3. C.
   20 A
4. D.
   $10\sqrt{2}\ \text{A}$

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1. A.
   $\dfrac{1}{\sqrt{2}}A$
2. B.
   $\dfrac{1}{2\sqrt{2}}A$
3. C.
   $\dfrac{1}{3\sqrt{2}}A$
4. D.
   $\dfrac{1}{4\sqrt{2}}A$

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