If the electric potential at a point is increased from 5 V to 15 V, what is the
Practice Questions
Q1
If the electric potential at a point is increased from 5 V to 15 V, what is the change in potential energy of a charge of 3 C placed at that point?
30 J
15 J
10 J
5 J
Questions & Step-by-Step Solutions
If the electric potential at a point is increased from 5 V to 15 V, what is the change in potential energy of a charge of 3 C placed at that point?
Step 1: Identify the initial electric potential, which is 5 V.
Step 2: Identify the final electric potential, which is 15 V.
Step 3: Calculate the change in electric potential (ΔV) by subtracting the initial potential from the final potential: ΔV = 15 V - 5 V.
Step 4: Calculate ΔV, which equals 10 V.
Step 5: Identify the charge (q) placed at that point, which is 3 C.
Step 6: Use the formula for change in potential energy (ΔU), which is ΔU = q × ΔV.
Step 7: Substitute the values into the formula: ΔU = 3 C × 10 V.
Step 8: Calculate the change in potential energy: ΔU = 30 J.
Electric Potential and Potential Energy – Understanding the relationship between electric potential (voltage) and potential energy, specifically how changes in voltage affect the potential energy of a charge.
Formula Application – Applying the formula ΔU = qΔV correctly to calculate the change in potential energy based on the change in electric potential and the charge.