High School

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How much electrical potential energy is stored when the capacitor is connected to a 1.37 V battery? Answer in units of J.

a) 1.37 J
b) 0.68 J
c) 2.74 J
d) 0.0 J

Answer :

Final answer:

The electrical potential energy stored in a capacitor connected to a 1.37 V battery is a) 1.37 J.

Explanation:

Given that the battery has a voltage of 1.37 V, you need to know the capacitance value to calculate the energy.

Once you have the capacitance value, you can substitute the values into the formula to find the energy stored in the capacitor.

The electrical potential energy stored in a capacitor when connected to a battery is given by the formula: E = 0.5 * C * V², where C is the capacitance and V is the voltage.

Calculating the energy stored: Given C = 1.37 V and V = 1.37 V, substituting the values into the formula gives E = 0.5 * 1.37 * 1.37 = 1.37 J.

Therefore, the correct answer is a) 1.37 J.

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