What is the potential difference across a 10Ω resistor if a current of 4A flows
Practice Questions
Q1
What is the potential difference across a 10Ω resistor if a current of 4A flows through it?
20V
40V
10V
30V
Questions & Step-by-Step Solutions
What is the potential difference across a 10Ω resistor if a current of 4A flows through it?
Correct Answer: 40V
Step 1: Identify the values given in the problem. We have a resistor with a resistance of 10 ohms (Ω) and a current of 4 amperes (A) flowing through it.
Step 2: Recall Ohm's Law, which states that Voltage (V) = Current (I) * Resistance (R).
Step 3: Substitute the values into the formula. Here, I = 4A and R = 10Ω.
Step 4: Calculate the potential difference (V) by multiplying the current (4A) by the resistance (10Ω).
Step 5: Perform the multiplication: 4A * 10Ω = 40V.
Step 6: Conclude that the potential difference across the 10Ω resistor is 40 volts (V).
