A voltage having the waveform of a sine curve is applied across a capacitor. When the frequency of the voltage is increased, what happens to the current through the capacitor?

What is the source voltage applied across a loop containing a resistor of 1000 ohm and capacitor of 15 microfarads in series when a current of 0.02 ampere flows across the circuit? Given that the voltage drop across capacitor is 5 Volts?

A

25 Volts

B

24 Volts

C

26 Volts

D

28 Volts

What is the source voltage applied across a loop containing a resistor of 100 ohm and capacitor of 15 microfarads in series when a current of 0.05 ampere flows across the circuit? Given that the voltage drop across capacitor is 2 Volts?

A

7 Volts

B

4 Volts

C

6 Volts

D

8 Volts

What is the source voltage applied across a loop containing a resistor of 500 ohm and capacitor of 10 microfarads in series when a current of 0.02 ampere flows across the circuit? Given that the voltage drop across capacitor is 2 Volts.

A

12 Volts

B

4 Volts

C

6 Volts

D

8 Volts

A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current

A

Increases

B

Remains constant

C

Decreases

D

Ceases

Seven people A, B, C, D, E, F and G live on separate floors of a 7-floor building. Ground floor is numbered 1, first floor is numbered. 2 and so on until the topmost floor is numbered 7. Each one of these having a different cars-Cadillac, Ambassador, Fiat, Maruti, Mercedes, Bedford and Fargo but not necessarily in the same order. Only three people live above the floor on which A lives. Only one person lives between A and the one having a car Cadillac. F lives immediately below the one having a car Bedford. The one having a car Bedford lives on an even-numbered floor. Only three people live between the ones having a car Cadillac and Maruti. E lives immediately above C. E is not having a car Maruti. Only two people live between B and the one having a car Fargo. The one having a car Fargo lives below the floor on which B lives. The one having a car Fiat does not live immediately above D or immediately below B. D does not live immediately above or immediately below A. G does not have a car Ambassador. Question : How many people live between the floors on which D and the one having a car Bedford ?

A

One

B

Two

C

Three

D

Four

Which of the points below correctly complete(s) the given statement? The Lissajous patterns help in the measurement of 1. Phase difference between two sine waves only 2. Frequency of one waveform only, if the frequency of other waveform is known

A

Neither 1 nor 2

B

Both 1 and 2

C

Only 1

D

Only 2

Given that the charging current of capacitor is constant in a monostable multivibrator using IC 555, then find the type of output waveform, type of capacitor voltage waveform and the time period of output.

A

The capacitor waveform is a ramp, the output waveform is sinusoidal, the time period is \(\frac{2.C.VCC}{3.I}\)

B

The capacitor waveform is a ramp, the output waveform is a pulse, the time period is \(\frac{2.C.VCC}{3.I}\)

C

The capacitor waveform is a ramp, the output waveform is a pulse, the time period is \(\frac{C.VCC}{3.I}\)

D

The capacitor waveform is a ramp, the output waveform is a ramp, the time period is \(\frac{2.C.VCC}{3.I}\)

A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased

A

VR > VC

B

VC > VR

C

VR = VC

D

VR and VC = 0

When a rectangular voltage waveform is applied to a capacitor, then the current waveform is ___________.

A

Rectangular

B

Sinusoidal

C

Sawtooth

D

Square

The voltage waveform in figure Q is applied across an ideal inductor. What is the resulting current waveform?

A

B

C

D

A voltage having the waveform of a sine curve is applied across a capacitor. When the frequency of the voltage is increased, what happens to the current through the capacitor?

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