To produce `10^3` Joules of heat in 10 seconds, how much voltage should be applied to 100 ohm resistance ?

Explanation

`H= 10^3 J`
t = 10 s
V = ?
`R = 100 Omega`
`H=V^2/Rt`
`10^3 = V^2/(100)xx10`
`V^2=10^4`
`V = sqrt(10^4)=10^2`
V = 100 Volt