Related Questions

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
A moving iron ammeter may be compensated for frequency errors by
A A shunt resistance
B A series inductance
C Shunt capacitance
D Series resistance
The function of shunt in an ammeter is to
A by pass the current
B increase the sensitivity of the ammeter
C increase the resistance of ammeter
D none of the above
Power is measured in a three-phase load by using an ammeter.
A True
B False
The internal resistance of an ammeter should be
A Very small
B Medium
C High
D Infinity
To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed
A Between the second and third resistors
B At the negative terminal of the source
C Between the third and fourth resistors
D At any point in the circuit
An ammeter should have ___________ resistance.
A Infinite
B Very large
C Very low
D None of the above
An ideal ammeter has ___________ resistance.
A Low
B Infinite
C Zero
D High
When an ammeter is inserted in the circuit, the circuit current will ___________.
A Increase
B Decrease
C Remain the same
D None of the above

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