If a potentiometer wire has a resistance of 10 ohms and a current of 0.5 A flows through it, what is the potential difference across the wire?
Practice Questions
1 question
Q1
If a potentiometer wire has a resistance of 10 ohms and a current of 0.5 A flows through it, what is the potential difference across the wire?
2.5 V
5 V
10 V
15 V
Using Ohm's law, V = IR = 0.5 A * 10 ohms = 5 V.
Questions & Step-by-step Solutions
1 item
Q
Q: If a potentiometer wire has a resistance of 10 ohms and a current of 0.5 A flows through it, what is the potential difference across the wire?
Solution: Using Ohm's law, V = IR = 0.5 A * 10 ohms = 5 V.
Steps: 5
Step 1: Identify the values given in the problem. The resistance (R) of the potentiometer wire is 10 ohms, and the current (I) flowing through it is 0.5 A.
Step 2: Recall Ohm's law, which states that the potential difference (V) across a conductor is equal to the current (I) flowing through it multiplied by the resistance (R) of the conductor. The formula is V = I * R.
Step 3: Substitute the values into the formula. Here, I = 0.5 A and R = 10 ohms.
Step 4: Calculate the potential difference. Multiply 0.5 A by 10 ohms: 0.5 * 10 = 5.
Step 5: Conclude that the potential difference (V) across the wire is 5 volts.
