Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Physics Current, Resistance and Electricity Resistance and Resistivity
If length of a wire is doubled, what happens to the resistance ?
1
None of the above
2
Increases four times
3
Becomes half
4
More than one of the above
5
Increases twice