Question

Find the resistance and current when E=2.2 J ,t=1 hr , V=220 V

Answer 1

Power = Energy/time taken=2.2J/ 1hr =2.2J/3600s
=> Power=11/18000 J/s. Power =VI=>11/18000=(220)I
=> 11/18000(220)= I=>1/360000= I =>
$i(current) = 2.778 \times {10}^{ - 6} .$
Where V is voltage and I is the current ,R is resistance.
Resistance =Voltage/ current=> R= 220/1/360000.
=> R =220×360000= 79200000 ohm.