A capacitor is charged to a potential difference of V. What is the energy stored
Practice Questions
Q1
A capacitor is charged to a potential difference of V. What is the energy stored in the capacitor?
1/2 CV²
CV
V²/C
1/2 QV
Questions & Step-by-Step Solutions
A capacitor is charged to a potential difference of V. What is the energy stored in the capacitor?
Correct Answer: U = 1/2 CV²
Step 1: Understand that a capacitor stores energy when it is charged.
Step 2: Know that the energy stored in a capacitor is represented by the symbol U.
Step 3: Learn the formula for the energy stored in a capacitor: U = 1/2 CV².
Step 4: Identify the variables in the formula: C is the capacitance (how much charge it can hold) and V is the potential difference (voltage) across the capacitor.
Step 5: To find the energy, you need to know the values of C and V.
Step 6: Plug the values of C and V into the formula U = 1/2 CV² to calculate the energy stored.
Capacitance and Energy Storage – The relationship between capacitance, potential difference, and the energy stored in a capacitor.
