1 How much power is consumed by a 12v incandescent lamp if i

1) How much power is consumed by a 12-v incandescent lamp if it draws 150 ma of current when lite?,

2) Solve the the power, P, disipated by the resistance ,R.

a) I= 1 A,R =100 ohm, P= ?

b) I= 20 mA,R = 1 kohm , P=?

c) V= 5 V,R = 150 ohm P=?

d) V= 22.36 V , R =1kohm P=

1) voltage=12 volts.

current=150*10^-3 ampss.

power=voltage*current=12*150*10^-3=1.8 watts.

a) p=(i)^2*R=1*100=100 watts.

b) P=(20*10^-3)^2*1*10^3=0.4 watts.

c) P=V^2/R=(5*5)/150=0.166 watts.

d) P=V^2/R=(22.36)^2/(1*10^3)=0.499 watts.