Technician 2026-2030T5D09
What is the current through a 24-ohm resistor connected across 240 volts?
C
Answer
Electrical principles and math
Type
A
2400 amperes
B
0.1 amperes
C
10 amperes
D
5760 amperes
Answer Notes
To solve for current when voltage and resistance are known, you must apply the Ohm's Law formula I = E / R.
Here, the voltage (E) is 240 volts and the resistance (R) is 24 ohms. Dividing 240 by 24 results in a current of 10 amperes.
Other choices represent common algebraic mistakes. Multiplying the values (240 x 24) yields 5760 amperes, which is incorrect. Reversing the division (24 / 240) gives 0.1 amperes.
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