Quiz on Rocket 1

This is a timed quiz. You will be given 120 seconds per question. Are you ready?

120

0%

Ohm's law is not applicable to

none

Correct! Wrong!

Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be

1 / 16 times

4 times

none

16 times

Correct! Wrong!

Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is

2 r

none

r / 2

4 r

Correct! Wrong!

When P = Power, V = Voltage, I = Current, R = Resistance and G = Conductance, which of the following relation is incorrect?

G= P / I2

V = √ (PR)

I =√ (P / R)

none

Correct! Wrong!

The unit of electrical conductivity is

ohm / sq. m

none

mho / sq. m

mho / metre

Correct! Wrong!

Which method can be used for absolute measurement of resistances ?

Releigh method

Wheatstone bridge method

none

Lortentz method

Correct! Wrong!

Conductance is expressed in terms of

mho

Peru

joule/sec

ohm / m

Correct! Wrong!

Quiz on Rocket 1

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