Yr 13 Capacitors

What symbol represents a capacitor in circuits?

• Two parallel lines

• A circle with two leads

• A zigzag line

• A single straight line

How do you calculate capacitance from charge and voltage?

• C equals Q multiplied by V

• C equals Q divided by V

• C equals V divided by Q

• C equals the square root of Q divided by V

What is the primary function of a capacitor in a circuit?

• Amplify electrical signals

• Convert AC to DC

• Regulate voltage levels

• Store electrical charge

What happens at the negative plate during capacitor charging?

• Neutral atoms gather

• Electrons are repelled away

• Excess electrons accumulate

• Protons accumulate

What does one farad of capacitance represent?

• One ampere per volt

• One joule per coulomb

• One coulomb per volt

• One volt per coulomb

How do electrons flow from a cell to a capacitor?

• From negative to negative plate

• From positive to negative plate

• From positive to positive plate

• From negative to positive plate

What is the total capacitance of capacitors in parallel?

• Sum of individual capacitances

• Average of individual capacitances

• Sum of the reciprocals of individual capacitances

• Product of individual capacitances

How to calculate total capacitance in series?

• Use reciprocal sum formula

• Use the average of the capacitances

• Add the capacitances directly

• Multiply the capacitances together

What results from raising the reciprocal sum to -1?

• Total inductance in series

• Total resistance in parallel

• Total capacitance in series

• Total impedance in parallel

. What describes the voltage change across a discharging capacitor? a) b) c) d)

• Periodically oscillating

• Constantly stable

• Linearly decreasing

• Exponentially decreasing