Serway_PSE_quick_ch26

Serway_PSE_quick_ch26 - Physics for Scientists and...

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Physics for Scientists and Engineers, 6e Chapter 26 - Capacitance and Dielectrics
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A capacitor stores charge Q at a potential difference Δ V . If the voltage applied by a battery to the capacitor is doubled to 2Δ V : 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 1. the capacitance falls to half its initial value and the charge remains the same 2. the capacitance and the charge both fall to half their initial values 3. the capacitance and the charge both double 4. the capacitance remains the same and the charge doubles
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The capacitance is a property of the physical system and does not vary with applied voltage. According to Equation 26.1, if the voltage is doubled, the charge is doubled.
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capacitors, as shown in the figure below. When a key is pushed down, the soft insulator between the movable plate and the fixed plate is compressed. When the key is pressed, the capacitance 1 2 3 33% 33% 33% 1 2 3 4 5 1. increases 2. decreases 3.
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Serway_PSE_quick_ch26 - Physics for Scientists and...

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