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It means that the current flows in a specific direction.

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Q: Why plus and minus are indicated in dc circuits?
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Related questions

What affect current flow?

In DC circuits . . .-- Voltage of the supply-- Resistance of the loadIn AC circuits . . .-- Both of the above, plus-- Frequency of the supply-- Reactance of the load


What is the function of the plus terminal of a multitester?

The plus/minus (red/black) terminals are for testing Direct Current (DC) power sources.


Why does Jim use dc supply in oscillator circuits?

Jim use dc supply in oscillator circuits to and ac out put.


What are the main difference while applying kirchoffs laws to dc circuits and ac circuits using meter readings?

For DC circuits, an alebraic sum is required. For AC circuits, a phasor sum is required.


How do you ground in dc circuits. I've seen many circuits around the net with plus ve terminal from the battery and no -ve terminal to the battery and ground symbols.. wat to do in these circumstances?

The physical body of your DC Equipment is always your GROUND. This GROUND is where you also connect your -VE.


Why capacitance is not used in DC circuits?

as it acts ideally as open circuit for dc


Why auto transformers are not used directly on dc circuits?

Transformers are not used on DC circuits because they rely on a varying magnetic field to transform power.


What are smothing reactors?

a smoothing reactor in dc circuits reduces harmonic currents in dc lines.


Can resistors function the same in AC circuits as in DC circuits?

Yes, they both can add a load to a circuit.


Why chokes are used in electrical circuits?

commonly with a single dc power source to isolate ac loads from other parts of the circuits. in dc power supplies to remove ripple


To which circuits superposition theorem can be applied?

both ac and dc


Where superposition theorem is applied for both ac and dc circuits?

In resonance condition xl=xc so that the circuit is pure resistive.so that suporposition theorem is applied for both dc and ac circuits