3 Now we're going to investigate what happens when we change the dimensions of our capacitor. Firstly, disconnect all meters and the battery. a) Vary the area of the plates. How does the Capacitance vary with ares A? Show your calculations below b) Vary the separation of the plates. How does the Capacitance vary with the separation d. Show this below: Write down an expression for the capacitance of a parallel capacitor, and calculate the constant of proportionality, Ex- 4 Reconnect the battery and adjust to 1.5 V. Check the View "Electric Field Lines" box, and the Charge meter box. With the battery connected, watch what happens when the separation of the plates is increased. What happens to charge when the plate separation is increased, and why? (Please take note of any charge flow) b What happens to the strength of the field when the separation is increased, and why? 5 With the separation 5 mm, disconnect the battery. a What happens to charge when the plate separation is increased, and why? b What happens to the voltage when the plate separation is increased, and why? c What happens to the strength of the field when plate separation is increased? (You can use the field meter to check this