Let the resistance of an electrical component remain constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?

Explanation

At constant temperature, `VpropI" "V_(1)=V" "I_(1)=I`
`V_(1)/V_(2)=I_(1)/I_(2)" "V_(2)=V//2" "I_(2)=?`
`(Vxx2)/V=I/I_(2)`
`I_(2)=I//2`
Therefore, current becomes half of its former value.