Question: If a circuit has a total resistance of 12 ohms and a current of 3A flows through it, what is the voltage across the circuit?
Options:
24V
36V
12V
18V
Correct Answer: 36V
Solution:
Using Ohm\'s law, V = I * R = 3A * 12 ohms = 36V.
If a circuit has a total resistance of 12 ohms and a current of 3A flows through
Practice Questions
Q1
If a circuit has a total resistance of 12 ohms and a current of 3A flows through it, what is the voltage across the circuit?
24V
36V
12V
18V
Questions & Step-by-Step Solutions
If a circuit has a total resistance of 12 ohms and a current of 3A flows through it, what is the voltage across the circuit?
Correct Answer: 36V
Step 1: Identify the values given in the problem. We have a total resistance (R) of 12 ohms and a current (I) of 3A.
Step 2: Recall Ohm's law, which states that Voltage (V) = Current (I) * Resistance (R).
Step 3: Substitute the values into the formula: V = 3A * 12 ohms.
Step 4: Calculate the result: 3 * 12 = 36.
Step 5: Conclude that the voltage across the circuit is 36 volts.
Ohm's Law – Ohm's Law states that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it and the resistance (R) of the conductor, expressed as V = I * R.
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