Current through 3 Ω resistor is 0.8 ampere, then potential drop through 4 Ω resistor is

Question

Current through 3 Ω resistor is 0.8 ampere, then potential drop through 4 Ω resistor is (A) 9.6 V (B) 2.6 V (C) 4.8 V (D) 1.2 V

Tardigrade Admin · Accepted Answer

Current across 3 Ω = 0.8 A 6 Ω is in parallel, current across 6 Ω = 0.4 A Total current = 1.2 A ∴ potential difference across 4 Ω resistor =1.2 A × 4 Ω = 4.8 V.

Q. Current through $3 Ω$ resistor is $0.8$ ampere, then potential drop through $4 Ω$ resistor is

9.6 V

2.6 V

4.8 V

1.2 V

Current across $3 Ω = 0.8 A$
$6 Ω$ is in parallel, current across $6 Ω = 0.4 A$
Total current $= 1.2 A$
$∴$ potential difference across $4 Ω$ resistor $= 1.2 A \times 4 Ω$
$= 4.8 V .$

Q. Current through 3Ω resistor is 0.8 ampere, then potential drop through 4Ω resistor is