Which one of the following statements is true for resistance in a parallel circuit?

If the resistance in parallel with a parallel resonant circuit is reduced, the bandwidth

A

Disappears

B

Becomes sharper

C

Increases

D

Decreases

If one of the resistors in a parallel circuit is removed, the total resistance

A

Decreases

B

Increases

C

Remains the same

D

Doubles

An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is ___________.

A

nG

B

(n - 1)G

C

$$\frac{{\text{G}}}{{{\text{n}} - 1}}$$

D

$$\frac{{\text{G}}}{{\text{n}}}$$

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

Which one of the following statements is true for current flowing in a parallel circuit?

A

The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it

B

The same current always flows through every part of a parallel circuit

C

The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance

D

The total current in a parallel circuit is always less than the smallest amount of current

E

None of the above

Which one of the following statements is true for the currents in a parallel RC circuit?

A

The total current is equal to the sum of the currents for the resistance and capacitance

B

The current always has the same amplitude and phase for every part of the circuit

C

The total current is less than the sum of the currents for the resistance and capacitance

D

The total current. is greater than the sum of the currents for the resistance and capacitance

E

None of the above

Which one of the following statements is true for the voltage in a parallel RC circuit?

A

The voltage always has the same amplitude and phase for every part of the circuit

B

The total voltage is equal to the sum of the voltages across the resistance and capacitance

C

The total voltage leads the total current by less than 90 degree

D

The total voltage is less than the sum of the voltages across the resistance and capacitance

E

None of the above

Which one of the following statements is true for the currents in a parallel RL circuit?

A

The total current is equal to the sum of the currents through the resistance and inductance

B

The current always has the same amplitude and phase for every part of the circuit

C

The total current is less than the sum of the currents through the resistance and inductance

D

The total current leads the total voltage by less than 90

E

None of the above

Which one of the following statements is true for voltage in a parallel circuit?

A

The total voltage in a parallel circuit is equal to the average value of the individual voltages

B

The total voltage in a parallel circuit is always less than the value of the smallest voltage

C

The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit

D

The total voltage of a parallel circuit is the same as the voltages across each branch

E

None of the above

Which one of the following statements is true for the voltage in a parallel RL circuit?

A

The voltage always has the same amplitude and phase for every part of the circuit

B

The total voltage is equal to the sum of the voltages across the resistance and inductance

C

The total voltage lags the total current by less than 90

D

The total voltages is less than the sum of the voltages across the resistance and inductance

E

None of the above

Which one of the following statements is true for resistance in a parallel circuit?

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