First slide

Applications involving charged particles moving in a magnetic field

Question

A galvanometer coil is replaced by another coil of diameter 1/4th of the original diameter and the total number of turns as ten times the original number. What will be the new deflection if the same current passes through it? Old deflection is $θ$ .

Moderate

A

$\frac{5}{8} θ$
B

$\frac{8}{5} θ$
C

$\frac{13}{5} θ$
D

$\frac{5}{13} θ$

Solution

$F o r m o v i n g c o i l g a l v a n o m e t e r, C θ = N B A I O l d D e f l e c t i o n = θ = \frac{N B A I}{C} N e w D e f l e c t i o n = θ^{1} = \frac{10 N B (A / 16) I}{C} D i v i d i n g w e g e t, θ^{1} = \frac{5}{8} θ$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App