If a circuit has a total resistance of 12Ω and a current of 1.5A, what is the vo
Practice Questions
Q1
If a circuit has a total resistance of 12Ω and a current of 1.5A, what is the voltage across the circuit? (2021)
18V
12V
15V
10V
Questions & Step-by-Step Solutions
If a circuit has a total resistance of 12Ω and a current of 1.5A, what is the voltage across the circuit? (2021)
Step 1: Identify the formula to use. We will use Ohm's law, which states that Voltage (V) = Current (I) * Resistance (R).
Step 2: Write down the values given in the question. The total resistance (R) is 12Ω and the current (I) is 1.5A.
Step 3: Substitute the values into the formula. Replace I with 1.5A and R with 12Ω in the formula V = IR.
Step 4: Calculate the voltage. Multiply 1.5A by 12Ω to get V = 1.5 * 12.
Step 5: Perform the multiplication. 1.5 * 12 equals 18.
Step 6: State the final answer. The voltage across the circuit is 18V.
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 the resistance (R) being the constant of proportionality, expressed as V = IR.