Question

Circle the correct word...

1. A touch screen on a phone is an example of a device that uses a... capacitor/CCD

2. When you bring your finger close to the screen your finger acts as one of the... plates/terminals

3. A sensing circuit works out the... position/temperature... of your finger. The camera on a phone is an example of a device that uses a... capacitor / CCD.

4. Light hits a grid of devices that produce... charge/current.

5. Each of the squares is a... capacitor/pixel.

Answer 1

A touch screen on a phone is an example of a device that uses a capacitor.

When you bring your finger close to the screen your finger acts as one of the plates.

A sensing circuit works out the position of your finger. The camera on a phone is an example of a device that uses a CCD.

Light hits a grid of devices that produce charge.

Each of the squares is a capacitor.