BasicB-005-004-001
What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?
C
Answer
Transmitters, receivers, and measurements
Type
A
2.5 volts
B
1.5 volts
C
1.0 volts
D
0.25 volts
Answer Notes
This question requires the application of Ohm's Law, which is the foundational mathematical relationship between voltage (E), current (I), and resistance (R) in an electrical circuit. The formula to find voltage is E = I × R.
In this scenario, you are given the current (I = 0.5 amperes) and the resistance (R = 2 ohms). To find the voltage, you simply multiply these two values together.
Multiplying 0.5 amperes by 2 ohms equals 1.0. Therefore, the correct voltage across the resistor is 1.0 volt.
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