question_answer

A galvanometer has a 50 division scale. Battery has no internal resistance. It is found that there is deflection of 40 divisions when \[R=2400\,\,\Omega \].Deflection becomes 20 divisions when resistance taken form resistance box is\[4900\,\,\,\Omega \]. Then we can conclude:   JEE Main Online Paper (Held On 10 April 2016)

A) Resistance required on R.B. For a deflection of 10 divisions is \[9800\,\,\,\Omega \].                

B) Full scale deflection current is 2 mA.                

C) Current sensitivity of galvanometer is \[20\mu A/\] division.                

D) Resistance of galvanometer is \[200\,\,\Omega \]