A μF capacitor is charged to V. Calculate the energy stored.
Salam Academy Original Practice · Proposed mark scheme
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12 questions
A capacitor holds mC at a p.d. of V. Calculate the energy stored, in mJ.
Salam Academy Original Practice · Proposed mark scheme
The energy stored in a capacitor is represented by
Salam Academy Original Practice · Proposed mark scheme
The p.d. across a capacitor is tripled. State the factor by which the energy stored increases.
Salam Academy Original Practice · Proposed mark scheme
A battery of e.m.f. V charges a capacitor until it holds mC. Calculate the energy dissipated in the circuit resistance, in mJ.
Salam Academy Original Practice · Proposed mark scheme
Which expression is not equal to the energy stored in a capacitor?
Salam Academy Original Practice · Proposed mark scheme
A μF capacitor discharges from V to V. Calculate the energy released, in mJ.
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When a capacitor is charged by a battery through a resistor, the fraction of the battery's energy output that is stored in the capacitor is
Salam Academy Original Practice · Proposed mark scheme
An isolated μF capacitor holds μC. Calculate the energy stored, in mJ.
Salam Academy Original Practice · Proposed mark scheme
A camera flash stores J in a capacitor charged to V. Calculate the capacitance, in μF.
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The energy stored is rather than because
Salam Academy Original Practice · Proposed mark scheme
A μF capacitor charged to V is connected across an uncharged μF capacitor. Charge shares until both have the same p.d. Calculate the total energy lost, in μJ.
Salam Academy Original Practice · Proposed mark scheme