Question

For converting a galvanometer into an ammeter and shunt resistance of small value is used in parallel whereas in the case of voltmeter are resistance of large values used in series explain why

Answer 1

To convert galvanometer to ammeter a shunt resistance is attached in parallel to the galvanometer so that no current flows through the galvanometer which having a high resistance can change the value of current flowing through it.

When converting galvanometer into voltmeter a large resistance is attached in series with the galvanometer to prevent voltage to through it and the setup is connected in parallel to the circuit so that current flows through the wire parallel to the galvanometer and not through the galvanometer which will change the voltage reading.

Hope it helps.

Mark as brainliest.

Answer 2

In need to understand the concept of attaching the shunt resistance in parallel we need to understand the reason  behind it.

• Concept of the ammeter connected in series with circuit, this will allow the whole current flow from the circuit as in series, if on the other side there is galvanometer, that will allow only small current, so the deflection  from zero to full scale.
• But if we attach this galvanometer to the ammeter in series with each other that will leads to the burning out of galvanometer.
• So to prevent this, we put the shunt resistance along the galvanometer in parallel so that the current will flow through small parts and that will not cause any harm to the circuit.