Physics Unit 4 - Capacitors Help!!!
Hey guys. Studying for the paper tomorrow. Can you help me with this question?
How is D the answer?
How is D the answer?
Original post by Sandy_Vega30
Hey guys. Studying for the paper tomorrow. Can you help me with this question?
How is D the answer?
How is D the answer?
You have to use the formula Qx 0.5 = Q x e blah blah
I tried sending the answer in a picture but it doesnt let me
Hi. If you use the equation Q = Q0 x E ^-t/RC and rearrange you can get D as the answer. i've attached the working I did:
Hope this helps! If you're unsure about any bit feel free to ask!
Hope this helps! If you're unsure about any bit feel free to ask!
Original post by VeeDubSpecs
Hi. If you use the equation Q = Q0 x E ^-t/RC and rearrange you can get D as the answer. i've attached the working I did:
Hope this helps! If you're unsure about any bit feel free to ask!
Hope this helps! If you're unsure about any bit feel free to ask!
or remember the answer is referring to half life of the capacitor kinda thing which is 69% so 5x69% gives you 3.45 which is 3.5 (2sf).
Original post by raman_17
or remember the answer is referring to half life of the capacitor kinda thing which is 69% so 5x69% gives you 3.45 which is 3.5 (2sf).
That's a good point! Hadn't thought of that
Original post by VeeDubSpecs
Hi. If you use the equation Q = Q0 x E ^-t/RC and rearrange you can get D as the answer. i've attached the working I did:
Hope this helps! If you're unsure about any bit feel free to ask!
Hope this helps! If you're unsure about any bit feel free to ask!
Thank You!! Understood!!
Original post by raman_17
or remember the answer is referring to half life of the capacitor kinda thing which is 69% so 5x69% gives you 3.45 which is 3.5 (2sf).
The half life of a capacitor is 69%? And why do you multiply it by the time constant?
Original post by Sandy_Vega30
The half life of a capacitor is 69%? And why do you multiply it by the time constant?
As its referring to "time taken" to reduce to half which is the half life of the capacitor
Quick Reply
Related discussions
- Engineering maths help
- Unit 1 engineering design for hnc... Ideas
- AQA A Level Physics Paper 2 7408/2 - 10 Jun 2022 [Exam Chat]
- Edexcel A Level Physics Paper 1: Advanced Physics I 9PH0 01 - 24 May 2023 [Exam Chat]
- need help please!
- Hypothesis Testing
- Hnc electrical engineering maths question
- A level physics question Capacitance (2)
- Physics Question help
- A level physics capacitors
- OCR A Physics 2018 paper 2 capacitors
- GCSE Exam Discussions 2024
- A-level Exam Discussions 2024
- Confusing Capacitor question
- hypothesis Testing with only > Mean side of z table
- Capacitor Question (PHYS)
- HNC electrical engineering maths question
- UNIT 7: calculus to solve engineering problems
- Hard Capacitor Question AQA A Level Physics
- Impedance
