In an $AC$ circuit,when an $AC$ ammeter is connected,it reads $i$ current. If a student uses a $DC$ ammeter in place of the $AC$ ammeter,the reading in the $DC$ ammeter will be:
- A$\frac{i}{\sqrt{2}}$
- B$\sqrt{2} \, i$
- C$0.637 \, i$
- Dzero
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