## 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______________?

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

## A CRO is used to measure _________________?

A CRO is used to measure _________________?

A. Voltage
B. Frequency
C. Phase
D. All of above

## 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 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

## Which of the following is likely to have the largest resistance ?

Which of the following is likely to have the largest resistance ?

A. Voltmeter of range 10 V
B. Moving coil galvanometer
C. Ammeter of range 1 A
D. A copper wire of length 1 m and diameter 3 mm

## The resistance of an ideal voltmeter is ______________?

The resistance of an ideal voltmeter is ______________?

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

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

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

## The horizontal plates of a CRO are supplied with _____________ to observe the waveform of signal?

The horizontal plates of a CRO are supplied with _____________ to observe the waveform of signal?

A. Sinusoidal wave
B. Cosine wave
C. Sawtooth wave
D. None of the above

## An ideal ammeter has ______________ resistance?

An ideal ammeter has ______________ resistance?

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

## To send 10% of the main current through a moving coil galvanometer of resistance 99 O the shunt required is______________?

To send 10% of the main current through a moving coil galvanometer of resistance 99 O the shunt required is______________?

A. 11 O
B. 9 O
C. 100 O
D. 9 O

## If the negative potential on the control grid of CRT is increased, the intensity of spot _____________?

If the negative potential on the control grid of CRT is increased, the intensity of spot _____________?

A. Is increased
B. Is decreased
C. Remains the same
D. None of the above