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 ___________.

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

$$\frac{{\text{G}}}{{\text{n}}}$$

A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively The current in each branch is

A

6.4 A, 6.9 A

B

6.4 A, 9.6 A

C

4.6 A. 6.9 A

D

4.6 A, 9.6 A

Usual value of the resistance suitable for a wire resistance strain gauge is __________ ohms.

A

20

B

80

C

120

D

500

The higher the range setting, the less the internal resistance and the greater the load effect of the voltmeter on a circuit.

A

True

B

False

A voltmeter should have ___________ resistance.

A

Zero

B

Very high

C

Very low

D

None of the above

The resistance of an ideal voltmeter is ___________

A

Low

B

Infinite

C

Zero

D

High

With zero volts on both inputs, an OP-amp ideally should have an output ___________

A

equal to the positive supply voltage

B

equal to the negative supply voltage

C

equal to zero

D

equal to CMRR

If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be

A

A voltage source

B

A current source

C

Both of above

D

None of the above

What resistance in ohms should be displayed when testing a speaker in a computer?

A

Q Ohms

B

16 Ohms

C

-200 Ohms

D

Unlimited Ohms

E

None of the above

On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?

A

1 V

B

50 V

C

500 V

D

1,000 V

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 ___________.

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