A resistor dissipates 60 W60\text{ W}60 W when connected across a 5.0 V5.0\text{ V}5.0 V supply with negligible internal resistance.
The supply voltage is reduced to 3.0 V3.0\text{ V}3.0 V and the resistor is replaced so that the power dissipated is still 60 W60\text{ W}60 W.
What is the percentage decrease in resistance?
36
40
60
64
