A voltmeter should have ____________resistance?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

5. The resistance of an ideal voltmeter is ______________?

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

6. An ammeter should have_____________ resistance?

   A. Infinite
   B. Very large
   C. Very low
   D. None of the above

7. 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

8. The most accurate device for measuring voltage is ____________?

   A. Voltmeter
   B. Multimeter
   C. CRO
   D. VTVM

9. 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

10. 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