Question

A) For the circuit shown in the figure, find the current through resistor R1=6.0?(left).

B)For the circuit shown in the figure, find the potential difference across resistor R1=6.0?(left).

C)For the circuit shown in the figure, find the current through resistor R2=15?.

D)For the circuit shown in the figure, find the potential difference across resistor R2=15?.

 

Answer 1

equivalent resistance

6 and 4 ohms are in series

6+4=10 ohms

10 and 15 ohms are in parallel

10*15/(10+15) =6 ohms

6 and 6 ohms are in series ,so equivalent resistance

R_eq=6+6=12 ohms

Total current flowing in the circuit

I=V/R_eq=24/12 =2 A

a)

Current flowing through 6 ohms resistor is

I_6,left=I=2 A

b)

Potential difference across 6 ohms

V_6,left=2*6=12 volts

c)

Current through 15 ohms is

I₁₅=2*(10/10+15) =0.8 A

d)

Potential difference across 15 ohms is

V₁₅=0.8*15=12 Volts