If a 24 V source is shorted through a 0.1 Ω resistance, what is the short-circuit current?

If a 24 V source is shorted through a 0.1 Ω resistance, what is the short-circuit current?

• A. 240 A
• B. 2 A
• C. 24 A
• D. 2400 A

Answer: (A)

When a source is connected through a very low resistance, the current is set by Ohm’s law: I = V / R. With a 24 V source and a path of 0.1 Ω, the current is 24 ÷ 0.1 = 240 A. So the short-circuit current is 240 A. If you check the other options, they would require different resistances: 2 A would need 12 Ω, 24 A would need 1 Ω, and 2400 A would need 0.01 Ω. The given resistance is 0.1 Ω, which gives 240 A.

When a source is connected through a very low resistance, the current is set by Ohm’s law: I = V / R. With a 24 V source and a path of 0.1 Ω, the current is 24 ÷ 0.1 = 240 A. So the short-circuit current is 240 A.

If you check the other options, they would require different resistances: 2 A would need 12 Ω, 24 A would need 1 Ω, and 2400 A would need 0.01 Ω. The given resistance is 0.1 Ω, which gives 240 A.