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

An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then

A

VR = VL

B

VL

C

VL = VR

D

VL > VR

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

At series resonance, the inductive reactance and capacitive reactance are never equal.

A

True

B

False

সিরিজে সংযুক্ত একটি এ্যামিটার এবং একটি অজানা রোধ দুটি একই রকম 1.5 V ব্যাটারীর দুই প্রান্তে সংযুক্ত আছে। যখন ব্যাটারী দুটি সিরিজে সংযুক্ত থাকে তখন এ্যামিটার। amp রিডিং প্রদর্শন করে। আবার ব্যাটারী দুটি সমান্তরালে সংযুক্ত করলে 0.6 amp রিডিং প্রদর্শন করে। ব্যাটারীর আভ্যন্তরিন রোধ কত ? (An ammeter and an unknown resistance are connected in series across two identical batteries of each 1.5 V. The ammeter shows current I amp and 0.6 amp when the batteries are connected in series and parallel, respectively. What is the internal resistance of the battery?)

A

13Ω

B

12Ω

C

1Ω

D

0.1Ω

E

23Ω

A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current

A

Is increased

B

Is decreased

C

Does not change

D

Momentarily goes to zero

The total capacitive reactance of a parallel capacitor circuit is:

A

equal to the sum of the individual capacitive-reactance values

B

equal to the sum of the individual capacitance values

C

equal to the source voltage divided by total current

D

less than the capacitance value of the smallest capacitor

E

None of the above

Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?

A

E = PR

B

E = I²R

C

I = E/R

D

I = ER

E

None of the above

In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.

A

True

B

False

While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is

A

Short-circuited

B

Open circuited

C

Alright

D

Leaky

When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is

A

Short-circuited

B

All right

C

Faulty

D

None of the above

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

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