Simple A. C Circuit 2
Physics SSS3 First Term
Simple A. C Circuit
Students should be able to;
- Explain reactance and impedance
- Determine current in circuits containing resistance and capacitance.
- Determine power in an a.c circuit
- Determine currents in circuits containing resistance, inductance and capacitance.
Direct current (DC) circuits involve current flowing in one direction. In alternating current (AC) circuits, instead of a constant voltage supplied by a battery, the voltage oscillates in a sine wave pattern, varying with time as V = Vo sin ωt.
In a household circuit, the frequency is 60 Hz. The angular frequency is related to the frequency, f, by ω = 2πfVo represents the maximum voltage, which in a household circuit in North America is about 170 volts. We talk of a household voltage of 120 volts, though; this number is a kind of average value of the.... View More
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