General Science/Basic Science Ohms Law Sample Test,Sample questions

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Question: 
A current of 2 A is passed through a conductor of resistance 10 ?. The potential between the ends of the conductor is

1.50 V

2.20 V

3.1/5 V

4.2 V

Posted Date:-2021-10-19 17:03:06

Question: 
A resistance wire is made into 5 equal parts and all the five parts are connected in parallel. What is the ratio of the effective resistance to the original resistance

1.5-Jan

2.10-Jan

3.25-Jan

4.10

Posted Date:-2021-10-19 17:03:06

Question: 
A tape recorder is marked as 6 V and 300 mA. If the voltage drops to 5V the decrease in current of the tape recorder is

1.250 mA

2.200 mA

3.50 A

4.50 mA

Posted Date:-2021-10-19 17:03:06

Question: 
A wire has a length of 1 m area of cross section of 0.5 mm2 and specific resistance of 50 ? 10-8 ?m. The resistance of the wire is

1.10 ?

2.5 ?

3.1 ?

4.20 ?

Posted Date:-2021-10-19 17:03:06

Question: 
At constant temperature the current flowing in a conductor is proportional to potential difference between the ends. This is

1.Joule�s law

2.Faraday�s law

3.Lenz�s law

4.Ohm�s law

Posted Date:-2021-10-19 17:03:06

Question: 
The bulb is labeled as 250 V 100 W. What is the resistance of the filament of the bulb in ohm

1.350

2.625

3.150

4.25000

Posted Date:-2021-10-19 17:03:06

Question: 
The current in an electric circuit is

1.proportional to the resistance

2.proportional to the conductance

3.inversely proportional to the potential difference

4.proportional to temperature

Posted Date:-2021-10-19 17:03:06

Question: 
The expression for specific resistance of a wire is

1.L/RA

2.RA/L

3.AL/R

4.R/AL

Posted Date:-2021-10-19 17:03:06

Question: 
The resistance of a conductor is due to

1.the flow of current in the conductor

2.the collision of electrons with atoms

3.The attractive force between electrons and protons

4.the thermal agitation of electrons

Posted Date:-2021-10-19 17:03:06

Question: 
The resistance of a conductor with a diameter of 2 mm is 20 ?. If the diameter is doubled with length remaining the same the resistance becomes

1.5 ?

2.10 ?

3.30 ?

4.40 ?

Posted Date:-2021-10-19 17:03:06

Question: 
The resistance of a medal in terms of its volume v is

1.?Lv/A

2.?L/Av

3.?L2/v

4.?v/ L2

Posted Date:-2021-10-19 17:03:06

Question: 
The specific resistance of a wire depends on

1.its radius

2.Its length

3.the material of the wire

4.its shape

Posted Date:-2021-10-19 17:03:06

Question: 
The unit of conductivity is

1.ohm-metre

2.mho-metre

3.mho-metre-1

4.ohm-metre-1

Posted Date:-2021-10-19 17:03:06

Question: 
The unit of resistivity is

1.ohm-metre

2.mho-metre-1

3.mho-metre

4.ohm-metre-1

Posted Date:-2021-10-19 17:03:06

Question: 
Three resistance are connected to from the side of a triangle ABC. If the resistances AB BC CA respectively are 40 ohm 60 ohm and 100 ohm the effective resistance between the points A and B

1.32 ?

2.50 ?

3.64 ?

4.200 ?

Posted Date:-2021-10-19 17:03:06

Question: 
Two resistors each of resistance 6 ? are connected in parallel and the combination in series with a resistor of resistance 2 ? and an accumulator of emf 2 ?. The current in the circuit is

1.1/7 A

2.2.5 A

3.0.4 A

4.7:00 AM

Posted Date:-2021-10-19 17:03:06

Question: 
Two resistors of 6 ? and 4 ? are connected in parallel and the combination is connected in series with a resistance of 2.6 ? and an accumulator of e.m.f. 2V. The current in the circuit in ampere is

1.2/12.6

2.2/26.6

3.5-Feb

4.2/4.6

Posted Date:-2021-10-19 17:03:06

Question: 
When a potential difference of 12 V cause a current flow of 3 A in a conductor what is the resistance of the conductor

1.0.5 ?

2.2 ?

3.4 ?

4.6 ?

Posted Date:-2021-10-19 17:03:06

Posted on by R4R Team

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