Increasing AC Mains Current to 1-2 A for Physics Lab Expt.

  • Context: Undergrad 
  • Thread starter Thread starter mkbh_10
  • Start date Start date
  • Tags Tags
    Current Increasing
Click For Summary

Discussion Overview

The discussion revolves around the challenge of increasing the current from AC mains to 1-2 A for a physics lab experiment involving the analysis of a hysteresis curve. Participants explore methods to achieve this current from a low available current of approximately 30 mA.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests using a transformer or an amplifier to increase the current.
  • Another participant questions the specifics of the current and voltage requirements, asking for clarification on whether the 1-2 A is needed at AC or DC voltage and what voltage corresponds to the 30 mA available.
  • There is a challenge regarding the understanding of basic electrical principles, with one participant implying that another may not grasp the relationship between voltage, current, and resistance (V=IR).

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the specifics of the current and voltage requirements, and there are competing views on how to approach the problem.

Contextual Notes

There are unresolved questions about the voltage at which the 30 mA is measured and the implications for the experiment. The discussion reflects uncertainty regarding the necessary electrical principles for the experiment.

mkbh_10
Messages
217
Reaction score
0
In my physics lab , we do our expt. : analysis of HYSTERESIS curve which requires a current of 1-2 A to magnetise the solenoid , now we have a ready made instrument for getting that value of current .

So what could i do manually in order to get that magnitude of current from AC mains which has a feeble current of around 30 mA.
 
Physics news on Phys.org
use a transformer, or an amplifier.
 
mkbh_10 said:
In my physics lab , we do our expt. : analysis of HYSTERESIS curve which requires a current of 1-2 A to magnetise the solenoid , now we have a ready made instrument for getting that value of current .

1-2A at what voltage? AC or DC?

mkbh_10 said:
So what could i do manually in order to get that magnitude of current from AC mains which has a feeble current of around 30 mA.

What do you mean by 30mA? You only have 30mA at 120Vrms available (why?), or you only need 30mA at some AC or DC voltage (what voltage?) for some variation on the experiment?
 
berkeman said:
1-2A at what voltage? AC or DC?



What do you mean by 30mA? You only have 30mA at 120Vrms available (why?), or you only need 30mA at some AC or DC voltage (what voltage?) for some variation on the experiment?

Dude, if he doesn't know V=IR, why would he know what 120Vrms meant?
 

Similar threads

  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 6 ·
Replies
6
Views
5K
  • · Replies 68 ·
3
Replies
68
Views
5K
  • · Replies 105 ·
4
Replies
105
Views
13K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
5K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 16 ·
Replies
16
Views
14K