1) An AC current with a peak value of 2.0 A passes through bulb A. A DC current
ID: 2113733 • Letter: 1
Question
1) An AC current with a peak value of 2.0 A passes through bulb A. A DC current of 2.0 A passes through bulb B. Which bulb is dimmer?
A) Bulb
B) Bulb B
C) Both bulbs are equally bright
D) There is not enough information to tell.
2) An inductor is attached to an AC voltage source. Which of the following changes could occur when the current is doubled? Select all possibilities.
A) Halving the voltage
B) Halving the frequency
C) Doubling the voltage.
D) Doubling the inductance
E) Quadrupling the voltage and doubling the frequency.
F) Halving the inductance.
G) Doubling the voltage and halving the frequency.
H) Doubling the frequency
3) A capacitor is attached to an AC voltage source. Which of the following changes could occur when the current is doubled? Select all possibilities.
A) Halving the voltage and quadrupling the frequency
B) Halving the frequency.
C) Halving the capacitance.
D) Doubling the voltage
E) Doubling the frequency.
F) Halving the voltage.
G) Doubling the capacitance
H) Quadrupling the voltage and halving the frequency.
H) Quadrupling the voltage and halving the frequency.
Explanation / Answer
1) b) as it will measure the rms value which will be less than peak in ac
2) c) inductance and frequency cant change ever. as inductance is the property of inductor
3) d) capacitance andf frequency can not chabge as capacitance is the property of capacitor.
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