A set of \( n \) equal resistors of resistance \( R \) each are connected in series to a battery...

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A set of \( n \) equal resistors of resistance \( R \) each are connected in series to a battery of emf \( E \) and internal resistance \( R \). A current \( I \) is observed to flow in the circuit. Then, \( n \)-resistors are connected in parallel to the same battery. It is observed that current is increased 10 times. What is the value of \( n \) ?
(a) 5
(b) 8
(c) 10
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