The condition for the validity under Ohm's law is that

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

The condition for the validity under Ohm’s law is that

A

resistance must be uniform

B

current should be proportional to the size of the resistance

C

resistance must be wire wound type

D

temperature at positive end should be more than the temperature at negative end

According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.

A

No component is concentrated at the surface of the solution

B

The component molecules are non polar and are of almost equal size

C

In the formation of solution, chemical combination/molecular association between unlike molecules takes place

D

The attractive forces between like and unlike molecules are almost equal

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

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 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

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

C

$$\frac{{\text{G}}}{{{\text{n}} - 1}}$$

D

(n - 1)G

An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is

A

Good

B

Open

C

Shorted

D

Partly shorted

What resistence in ohms should be displayed ehen testing a speaker in a computer?

A

0 Ohms

B

16 Ohms

C

-200 Ohms

D

Unlimited Ohms

E

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

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

A

20

B

80

C

120

D

500

The condition for the validity under Ohm's law is that

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