Question

the resistance of a conductor is 200 ohm.current flow is 1A.how much time will take to produce 160000 Joule?​

Answer 1

Answer:-

• Resistance=R=200ohm
• Current=I=1A
• Heat=160000J=H
• Time=t=?

According to Joules law

$\boxed{\sf H=I^2Rt}$

$\\ \sf\longmapsto 160000=1^2\times 200t$

$\\ \sf\longmapsto 160000=200t$

$\\ \sf\longmapsto t=\dfrac{160000}{200}$

$\\ \sf\longmapsto t=\dfrac{1600}{2}$

$\\ \sf\longmapsto t=800s$

$\\ \underline{\boxed{\bf{\therefore Time=800s.}}}$