If the current through 3 Ω resistor is 0.8 A, then potential drop through 4 Ω reisistor is:

Question

If the current through 3 Ω resistor is 0.8 A, then potential drop through 4 Ω reisistor is: (A) 1.5 V (B) 2.6 V (C) 4.8 V (D) 9.8 V

Tardigrade Admin · Accepted Answer

Current across the 3 Ω resistor =0.8 text A The current through the parallel resistance of 6 Ω . is =(0.8× 3/6)=0.4A Hence, the total current across Q is =0.8+0.4=1.2 Now, potential across 4 Ω resistor is =4× 1.2=4.8

Q. If the current through $3 Ω$ resistor is 0.8 A, then potential drop through $4 Ω$ reisistor is:

1.5 V

2.6 V

4.8 V

9.8 V

Current across the $3 Ω$ resistor $= 0.8 A$ The current through the parallel resistance of $6 Ω$ . is $= \frac{0.8 \times 3}{6} = 0.4 A$ Hence, the total current across Q is $= 0.8 + 0.4 = 1.2$ Now, potential across $4 Ω$ resistor is $= 4 \times 1.2 = 4.8$

Q. If the current through 3Ω resistor is 0.8 A, then potential drop through 4Ω reisistor is: