Related Questions

Ohm's law is not applicable to
A Semiconductors
B D.C. circuits
C Small resistors
D High currents
একটি রোধ থার্মোমিটারের সাহায্যে পানির ত্রৈধবিন্দুর রোধ 6.7 ohm এবং কক্ষ তাপমাত্রায় রোেধ 7.5 ohm পাওয়া যায়। কক্ষের তাপমাত্রা কত হবে? 
A 18.2° C
B 20.8° C
C 32.6°C
D 35.9° C
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 resistance of a conductor does not vary in accordance with Ohm’s law it is known as
A non-linear conductor
B reverse conductor
C bad-conductor
D non-conductor
Which one of the following statements regarding Ohm's law is not correct?
A Ohm's law is an assumption that current through a conductor is always directly proportional to the potential difference applied to it
B A conducting device obeys Ohm's law when the resistance of a device is independent of magnitude and polarity of applied potential difference
C A conducting material obeys Ohm's law when the resistance of material is independent of the magnitude and direction of applied electric field
D All homogeneous materials obey Ohm's law irrespective of whether the field is within range or strong
Which one of the following is a direct statement of Ohm's law?
A The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
B The total resistance of a parallel circuit is less than the value of the smallest resistance
C The algebraic sum of voltages in a loop is equal to zero
D The algebraic sum of currents entering and leaving a point is equal to zero
E None of the above
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
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
Ohm's law describes how current is related to voltage and resistance.
A True
B False
Kirchhoff s law is not applicable to circuits with
A Lumped parameters
B Passive elements
C Distributed parameters
D Non-linear resistances

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