railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrician and Wireman Cells and Batteries

The EMF of a cell falls from 2.1 V to 1.8 V when its terminals are joined to an external resistance of 4 Ω. The value of the current flowing through the external resistance is:

1

0.45 A

2

0.045 A

3

45 A

4

4.5 A

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