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DC or Direct Current. The current is no alternating.
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∙ 15y ago
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The voltmeter has greater accuracy when measuring what kind of current?
A voltmeter has greater accuracy when measuring direct current. This kind of current is constant unlike alternating current which has constant fluctuations.
Can a constant dc current induce a steady state voltage in a transformer?
No. A constant DC current of sufficient magnitude induces smoke in a transformer.
If voltage remains constant and resistance decreases current flow?
the current will increase because of a lower level of resistance , hence more current will flow- easily
If the voltage applied to a circuit remains constant and the resistance in the circuit is increased the current will?
V = IR Where, V = voltage I = current R = resistance Thus if resistance is increased with constant voltage current will decrease
Highly inductive load as a constant current source?
An inductor is a device that resists a change in current. The equation is di/dt = v/L. This means that inductors are current sources, and given a sufficiently large inductor, in comparision to the circuit, it is a constant current source.
What is the output impedance of a constant voltage source and constant current source?
The output impedance is z= V/I, the ratio of the constant voltage and the constant current source.
What Circuits considered constant?
What is considered "constant current"
Flux in DC vary or constant.?
In DC or direct current, the flux is constant. AC or alternating current is variable.
The voltmeter has greater accuracy when measuring what kind of current?
A voltmeter has greater accuracy when measuring direct current. This kind of current is constant unlike alternating current which has constant fluctuations.
How can you select the current values for welding?
The amount of current (amps) is controlled by the user. It's done with a variable resistor. Another thing to note is whether you are welding constant current or constant voltage. If you are welding constant current, the voltage will vary and a set Amp measure will remain constant. With constant voltage, the current will vary and that's determined by the resistance. Constant voltage should be an easier set up. I'm not 100% sure but most stick welding is constant current, which is why increasing the arc length produces more heat, because more arc length should increase the resistance, which would cause the welding machine to increase voltage to keep the current constant.
What current flows in one direction while anther remains constant?
In one direction - or constant - is called direct current. The other sort is called alternating current.
How does voltage change in relation to current assuming that resistance remains constant?
Ohm's Law: voltage = current * resistance. If resistance is a constant, then voltage is directly proportional to current.
What happens to the current when the voltage is doubled and the resistance is constant?
I = E/R If resistance is constant, then current is directly proportional to voltage. Double the voltage ===> the current will also double.
Why is amps constant in a series connection?
Since the Emf(voltage) being supplied to circuit is constant then so is the current in series circuit.In parallel circuits the current is then divided depending on the resistors.but for both circuits the sum of the current in= current outAnswerIt's not necessarily 'constant', but it will be the samecurrent.
How does current vary with the resistance in the circuit if the voltage is constant?
Inversely. As resistance increases, current dereases; given that the applied voltage is constant.
Can a constant dc current induce a steady state voltage in a transformer?
No. A constant DC current of sufficient magnitude induces smoke in a transformer.
Will doubling the resistance in a circuit halve the current if voltage is held constant?
If resistance is halved while voltage remains constant, the current will double.
