Question

Because of the shunt, the ammeter’s overall resistance is

• A. Average
• B. Medium
• C. Large
• D. Very small

Answer 1

The correct option is D Very small

We know that when two resistors are connected in parallel, the net resistance of the combination will be smaller than the smallest of the resistor. This can always be shown mathematically.
Hence since the shunt is a very small resistance, its parallel combination with any other resistance will create a net resistance smaller than its own value. Hence ammeter resistance will also be very small.