Question: A circuit has a total resistance of 12Ω and a current of 2A. What is the voltage across the circuit? (2021)
Options:
24V
12V
6V
48V
Correct Answer: 24V
Exam Year: 2021
Solution:
Using Ohm\'s law (V = IR), V = 2A * 12Ω = 24V.
A circuit has a total resistance of 12Ω and a current of 2A. What is the voltage
Practice Questions
Q1
A circuit has a total resistance of 12Ω and a current of 2A. What is the voltage across the circuit? (2021)
24V
12V
6V
48V
Questions & Step-by-Step Solutions
A circuit has a total resistance of 12Ω and a current of 2A. What is the voltage across the circuit? (2021)
Step 1: Identify the formula to use, which is Ohm's law: V = I * R.
Step 2: Identify the values given in the problem: the current (I) is 2A and the resistance (R) is 12Ω.
Step 3: Substitute the values into the formula: V = 2A * 12Ω.
Step 4: Calculate the voltage: V = 24V.
Ohm's Law – Ohm's Law states that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it, with resistance (R) as the proportionality constant, expressed as V = IR.
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