The resistors R1 R2 R3 and R4 have values of 1 2 5 and 15 oh

The resistors R_1, R_2, R_3, and R_4 have values of 1, 2, .5 and 1.5 ohms respectively. For a current I of 1 amp, what is the voltage drop across R_2? 1 volt 0.5 volts 2 volts 1.5 volts

Solution

current through resistor R2=[1*(0.5+1.5)]/[2+0.5+1.5]=0.5 Amps.

voltage drop across R2=2*Current through resistor R2=0.5*2=1 volt.