An alternating current and a direct current flows simultaneously in the same conductor. if the effective value of the alternating current is 5A and the direct current is 10 A, what will an AC ammeter read when connected in the circuit?
depends on the type of ammeter. Most would react to the energy, so
aCenergy= I^2 R= 25R
dcEnergy=I^2R=100R
total energy=125R
current= sqrt(125)=5sqrt5=about 11.2 amps
Thank you so much. 3 years have passed, yet, it helps me <3
Well, if the alternating current and direct current are flowing simultaneously in the same conductor, it sounds like we have a party going on in that circuit! 🎉 Now, when you connect an AC ammeter in the circuit, it will only be able to measure the alternating current component. So, the AC ammeter will happily show the effective value of the alternating current, which is 5A. Just remember, it'll be jamming out to the AC beat, ignoring the direct current flowing by like a wallflower at the party. 🕺💃
When an alternating current (AC) and a direct current (DC) flow simultaneously in the same conductor, an AC ammeter will only measure the AC component of the current. Therefore, the AC ammeter will read the effective value of the alternating current, which is 5A in this case.
To determine what the alternating current (AC) ammeter will read when connected in the circuit, we need to understand the behavior of AC and DC currents and their interaction.
AC and DC are two different types of electrical currents with distinct characteristics. DC flows constantly in one direction, while AC periodically changes direction. When AC and DC currents flow simultaneously in the same conductor, their effects can combine.
In this scenario, we are given that the effective value (also known as the Root Mean Square or RMS value) of the AC current is 5A and the DC current is 10A.
The effective value of the AC current represents the equivalent DC current that would produce the same amount of power dissipation. It is important to note that an AC ammeter measures the RMS value of the AC current.
Since the AC and DC currents flow simultaneously, we can use vector addition to determine the resultant current. Vector addition involves adding the magnitudes of the currents while considering their respective directions.
In this case, the AC current is alternating, so its direction changes over time. However, the DC current flows continuously in the same direction. Therefore, the magnitudes of the AC and DC currents can be directly added to determine the resultant current.
Adding the magnitudes: 5A (AC) + 10A (DC) = 15A
Hence, when an AC ammeter is connected in the circuit, it will read 15A. Remember that the AC ammeter measures the RMS value, so it will indicate an effective current of 15A.