Question on topic current electricity

A galvanometer of resistance 'R' is to be converted into an ammeter with the help of a shunt resistance 'r'. If the ratio of heat dissipated through galvanometer and shunt is 3:4, then A) r=3R/4 B) r=4R/3 C)R=9r/16 D)R=16r/9.

• Ishpreet
• 3383 Views
• 2 Answers

• because the heat dissipation P = I^2*R therfore it is proportional to R thus answeru A /uholds good

  • Yash
  • 06 Jul
  • 0 Comment

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  • Prasmit
  • 20 Apr
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