Energy Stored by Capacitor Video Lessons

Concept

# Problem: Suppose you have a 9.00-V battery, a 2.00-μF capacitor, and a 7.40-μF capacitor Find the charge and energy stored if the capacitors are connected to the battery in parallel

###### FREE Expert Solution

Equivalent capacitance for parallel capacitors:

$\overline{){{\mathbf{C}}}_{{\mathbf{eq}}}{\mathbf{=}}{{\mathbf{C}}}_{{\mathbf{1}}}{\mathbf{+}}{{\mathbf{C}}}_{{\mathbf{2}}}}$

The charge stored in a capacitor:

$\overline{){\mathbf{Q}}{\mathbf{=}}{\mathbf{C}}{\mathbf{V}}}$

Energy stored in a capacitor:

Ceq = C1 + C2 = 2.00 + 7.40 = 9.40 μF(10-6F/μF) = 9.40 × 10-6 F

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###### Problem Details

Suppose you have a 9.00-V battery, a 2.00-μF capacitor, and a 7.40-μF capacitor

Find the charge and energy stored if the capacitors are connected to the battery in parallel