If a circuit has a total resistance of 12Ω and a current of 3A flows through it,

If a circuit has a total resistance of 12Ω and a current of 3A flows through it, what is the voltage across the circuit? (2020)

If a circuit has a total resistance of 12Ω and a current of 3A flows through it, what is the voltage across the circuit? (2020)

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 3A.
Step 3: Substitute the values into the formula. Replace I with 3A and R with 12Ω in the formula V = IR.
Step 4: Calculate the voltage. Multiply 3A by 12Ω to get V = 3 * 12.
Step 5: Perform the multiplication. 3 * 12 equals 36.
Step 6: State the final answer. The voltage across the circuit is 36V.

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.