6b Capacitors Quiz alevel edexcel

Capacitance is a measure of a capacitor's ability to store:

• Charge

• Energy

• Voltage

• Current

The charge-discharge curve of a capacitor typically follows a:

• Linear line

• Exponential curve

• Sinusoidal wave

• Step function

A capacitor is a device that stores electrical:

• Charge

• Energy

• Voltage

• Current

The time constant life of a capacitor refers to the time it takes for the capacitor to:

• Fully charge

• Fully discharge

• Reach 37% of its maximum charge or voltage

• Reach 63% of its maximum charge or voltage

The time constant of a capacitor charging or discharging process is defined as the time it takes for the charge or voltage to reach approximately:

• 10% of its maximum value

• 25% of its maximum value

• 50% of its maximum value

• 75% of its maximum value

The energy stored in a capacitor is given by the formula:

• E=½CV^2

• E=½C^2V

• E=½QV

• E=½Q^2C

The formula to calculate the charge of a capacitor is:

• Q=CV

• Q=CV/2

• Q=V/C

• Q=C/V