A 4 - ? resistor is connected in parallel with a 12 - ? resistor and this combin

Question

A 4-? resistor is connected in parallel with a 12-? resistor and this combination is connected to a 6-V DC power supply as shown in Figure 21-10. What is the current through the 12-? resistor?   Please explain

               
           0.5 A                             
           3.0 A                             
           2.5 A                             
           1.5 A                             
           2.0 A A 4-? resistor is connected in parallel with a 12-? resistor and this combination is connected to a 6-V DC power supply as shown in Figure 21-10. What is the current through the 12-? resistor?

Explanation / Answer

4 and12 are connected in parallelso efff resistance R = R1R2/R1+R2

Reff = 4*12/16 = 3 ohms

same volatge passes throguh ressitors in parallel combinatrion

so current across 12 ohms

i = V/R = 6/12

i = 0.5 Amps

option A

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