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When a current of 5 A flows through an ammeter, it gives full deflection. The resistance of ammeter is 20 Ω. If the same ammeter is to be used for measuring a maximum current of 10 A, then the ammeter must be connected to a resistance of : |
40 Ω in series 40 Ω in parallel 20 Ω in series 20 Ω in parallel |
20 Ω in parallel |
The correct answer is Option (4) → 20 Ω in parallel |
