A fuse with a circular cross−sectional radius of 0.15 mm blows at 15A. What should be the radius of the cross section of a fuse made of same material that blows at 30A?


Question and Answers Forum

All Questions Topic List
Electric Current and Circuits Questions
Previous in All Question Next in All Question
Previous in Electric Current and Circuits Next in Electric Current and Circuits
Question Number 36529 by rahul 19 last updated on 03/Jun/18

$A fuse with a circular cross - sectional$ $radius of 0.15 mm blows at 15 A . What$ $should be the radius of the cross section$ $of a fuse made of same material that$ $blows at 30 A ?$
	Answered by tanmay.chaudhury50@gmail.com last updated on 03/Jun/18

	$M o r e a r e a m o r e c u r r e n t r e q u i r e d$ $\frac{Π r_{1}^{2}}{Π r_{2}^{2}} = \frac{I_{1}}{I_{2}}$ $r_{2}^{2} = \frac{r_{1}^{2} \times I_{2}}{I_{1}} = \frac{0.15 \times 0.15 \times 30}{15}$ $r_{2} = 0.15 \times \sqrt{2}$
	Commented by rahul 19 last updated on 03/Jun/18
	Thank you sir ��
	Answered by math1967 last updated on 03/Jun/18

	$r a d i u s = \sqrt{\frac{. 15 \times . 15 \times 30}{15}} = . 15 \times \sqrt{2} m m$ $p l s . c h e c k a n s$
	Commented by rahul 19 last updated on 03/Jun/18

	$Correct!$ $Thanks sir .$
Terms of Service
Privacy Policy
Contact: info@tinkutara.com

Question and Answers Forum