Assertion :Galvanometer cannot as such be used as an ammeter to measure the value of the current in a given circuit Reason: Galvanometer gives a full-scale deflection for a current of the order of micro ampere.

Question

Assertion :Galvanometer cannot as such be used as an ammeter to measure the value of the current in a given circuit Reason: Galvanometer gives a full-scale deflection for a current of the order of micro ampere. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Galvanometer is a very sensitive device, it gives a full-scale deflection for current of the order of micro ampere. Also for measuring current the galvanometer has to be connected in series, and as it has a large resistance, this will change the value of the current in the circuit. To overcome these difficulties one attaches a small resistance called shunt resistance in parallel with the galvanometer coil

Q. Assertion :Galvanometer cannot as such be used as an ammeter to measure the value of the current in a given circuit Reason : Galvanometer gives a full-scale deflection for a current of the order of micro ampere.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Q. Assertion :Galvanometer cannot as such be used as an ammeter to measure the value of the current in a given circuit
Reason : Galvanometer gives a full-scale deflection for a current of the order of micro ampere.