Related Mcqs:

1. 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. G/(n-1)
   D. G/n

2. What is the total resistance of a voltmeter on the 10 V range when the meter movement is rated for 50 µA of full-scale current ?

   A. 10 kO
   B. 20 kO
   C. 200 kO
   D. None of the above

3. The resistance of an ideal voltmeter is ______________?

   A. Low
   B. Infinite
   C. Zero
   D. High

4. A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ______________?

   A. GS/(G+S)
   B. G+S
   C. G-S
   D. None of the above

5. If 2% of the main current is to be passed through a galvanometer of resistance G, then resistance of the shunt required is ________________?

   A. G/50
   B. G/49
   C. 49 G
   D. 50 G

6. A voltmeter should have ____________resistance?

   A. Zero
   B. Very high
   C. Very low
   D. None of the above

7. A voltmeter is connected in a _____________ with the circuit component across which potential difference is to be measured?

   A. Parallel
   B. Series
   C. Series or parallel
   D. None of the above

8. The sensitivity of a voltmeter which uses a 100 µA meter movement is ____________?

   A. 1 kO/V
   B. 10 kO/V
   C. 5 kO/V
   D. Data insufficient

9. A galvanometer in series with a high resistance is called_______________?

   A. An ammeter
   B. A voltmeter
   C. A wattmeter
   D. None of the above

10. A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale resistance for this movement ?

    A. 3 kO
    B. kO
    C. kO
    D. 6 kO