A circuit has a total resistance of 8Ω and a current of 4A. What is the voltage
Practice Questions
Q1
A circuit has a total resistance of 8Ω and a current of 4A. What is the voltage across the circuit? (2021)
32V
16V
8V
4V
Questions & Step-by-Step Solutions
A circuit has a total resistance of 8Ω and a current of 4A. What is the voltage across the circuit? (2021)
Step 1: Identify the values given in the problem. We have a total resistance (R) of 8 ohms (Ω) and a current (I) of 4 amperes (A).
Step 2: Recall Ohm's law, which states that Voltage (V) = Current (I) * Resistance (R).
Step 3: Substitute the values into the formula: V = 4A * 8Ω.
Step 4: Calculate the multiplication: 4 * 8 = 32.
Step 5: Conclude that the voltage across the circuit is 32 volts (V).
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 = I * R.
