Assertion: Reduction factor textk of a tangent galvanometer helps in reducing deflection of current. Reason: As reduction factor increases with increase of current.

Question

Assertion: Reduction factor textk of a tangent galvanometer helps in reducing deflection of current. Reason: As reduction factor increases with increase of current. (A) If both Assertion and Reason are true and the Reason is correct explanation of the Assertion. (B) If both Assertion and Reason are true but Reason is not explanation of the Assertion. (C) If Assertion is true but the Reason is false. (D) If Assertion is false but Reason is true.

Tardigrade Admin · Accepted Answer

In tangent galvanometer current is directly proportional to the deflection and reduction factor helps in reducing reflection of the current.
The Reduction factor doesn't depend on current but on the construction of the instrument.

I = \frac{k ϕ}{( NB A )}

The assertion is true but the Reason is false.

Q. Assertion: Reduction factor k of a tangent galvanometer helps in reducing deflection of current. Reason: As reduction factor increases with increase of current.

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

If both Assertion and Reason are true but Reason is not explanation of the Assertion.

If Assertion is true but the Reason is false.

If Assertion is false but Reason is true.

In tangent galvanometer current is directly proportional to the deflection and reduction factor helps in reducing reflection of the current. The Reduction factor doesn't depend on current but on the construction of the instrument. I=(NBA)kϕ​ The assertion is true but the Reason is false.

Q. Assertion: Reduction factor $k$ of a tangent galvanometer helps in reducing deflection of current.

Reason: As reduction factor increases with increase of current.