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Results tagged with electric-circuits
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user 233562
An electronic system, with closed loop current flow, and relative electrical potentials present across electrical components.
0
votes
2
answers
79
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Confusion about magnetism in a circuit breaker
Why should the core of a coil of a circuit breaker be strongly magnetized when current passes through it, and immediately demagnetized when the switch is turned off?
Please try to explain the reason …
- 105
1
vote
4
answers
408
views
Confusion about Ohm's law
So does ohms law say if the resistance is increased the voltage will also increase but not the current? And in non ohmic conductors the current increases with the voltage even though the resistance is …
- 105
1
vote
1
answer
1k
views
Confusion about the impact of resistance in a parallel circuit
If two bulbs are connected in parallel circuit with a variable resistor attached to the one of the branches and the resistance is decreased, what will be the effect on the brightness of the both bulbs …
- 105
1
vote
3
answers
229
views
Confusion about cells in parallel
I cant understand why cells in parallel will last longer. Could someone please explain?
- 105
-2
votes
2
answers
71
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Current in a potential divider [closed]
I dont understand why the current in R wont be the same as that in the 50 ohms resistor. Isnt that the rule for series circuits? The emf for the battery is 18 volts.
- 105