O-Level Physics: Resistance Questions Answered

[Xcommunicated]

Well, these question are concerned with O-Level Physics.

- A bulb lights brighter when resistance is higher or lower?

- What about bulbs with filaments and thermistors?

- Is current directly proportional to resistance for filament lamps?

- When does current is directly proportional to resistance?

- When does current is inversely proportional to resistance?

- What is the relation between voltage and resistance (inversely, directly proportional)

Thanks.

 

[LowlyPion]

Welcome to PF.

So what are your thoughts on how to solve them?