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WorksheetsOhm’s Law to Resistive Circuits with AC Sources Quizizz
Total questions: 10
Worksheet time: 5mins
In an AC circuit with only series resistances, which of the following statements is true?
V1 and I are in phase.
RT = R1 + R2 + R3 + ...
Each voltage drop is in phase with the series current.
All of the above.
An AC source is connected to a resistive circuit. Which of the following statements is true?
Current leads the voltage, and both are in the same phase.
Current lags behind the voltage, and both are in the same phase.
Current and voltage are in the same phase.
Any of the above may be true depending upon the value of resistance.
In an AC circuit, power is dissipated in:
Resistance only.
Inductance only.
Capacitance only.
None of the above.
The point to be kept in mind for the verification of Ohm's law is:
Ammeter and voltmeter should be connected in series.
Ammeter should be connected in series, and voltmeter in parallel.
Ammeter should be connected in parallel, and voltmeter in series.
None of the above.
According to Ohm's law:
V is proportional to R.
V is proportional to 1/R.
V is proportional to I.
None of the above.
Find the potential difference (in volts, V) across a resistance of 2.5 KΩ through which a 2mA current flows.
5
0.2
1.25
0.8
The potential difference at the terminals of an electrical heater is 60V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is changed to 127.5 V?
8.5 A
24 A
10 A
12 A
What is the correct expression for the instantaneous current in a resistive circuit?
i = Vm(sint) / R
i = Vm(cost) / R
i = V(sint) / R
i = V(cost) / R
Can Ohm's law be applied in an AC circuit?
Yes
No
Depends on the RMS current
Depends on the RMS voltage
Find the value of the instantaneous voltage if the resistance is 2 ohms, and the instantaneous current in the circuit is 5 amperes.
5 V
2 V
10 V
2.5 V
