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

Related Mcqs:

1. 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

2. 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

3. A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is________________?

   A. nG
   B. G/n
   C. G/(n-1)
   D. (n-1)G

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. A VTVM has_____________input resistance than that of a multi meter?

   A. More
   B. Less
   C. Same
   D. None of the above

6. If a multimeter has a sensitivity of 1000 O per volt and reads 50 V full scale, its internal resistance is _____________?

   A. 20 kO
   B. 50 kO
   C. 10 kO
   D. None of the above

7. 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

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

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

9. 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

10. 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