Q183 / 200 · MHT CET - Medical 2026 (24 April Shift 2) · Physics
In the following figure current I equal to
- A$1.1\ \text{A}$
- B$2.2\ \text{A}$
- Correct answerC$3.3\ \text{A}$
- D$4.4\ \text{A}$
Solution
According to Kirchhoff's Current Law (KCL), the total current entering a closed boundary or network must be equal to the total current leaving it.
Sum of all currents entering the network:
$I_{\text{in}} = 2.7 + 3 + 4.5 + 2.3 = 12.5\ \text{A}$
Sum of all currents leaving the network:
$I_{\text{out}} = 2.4 + 3.7 + 3.1 + I = 9.2 + I$
Equating the entering and leaving currents:
$12.5 = 9.2 + I$
$I = 12.5 - 9.2 = 3.3\ \text{A}$
Answer: $3.3\ \text{A}$
Sum of all currents entering the network:
$I_{\text{in}} = 2.7 + 3 + 4.5 + 2.3 = 12.5\ \text{A}$
Sum of all currents leaving the network:
$I_{\text{out}} = 2.4 + 3.7 + 3.1 + I = 9.2 + I$
Equating the entering and leaving currents:
$12.5 = 9.2 + I$
$I = 12.5 - 9.2 = 3.3\ \text{A}$
Answer: $3.3\ \text{A}$
Hence, the correct answer is option: 'C'.