MCQ on Ohms law: Previous trends reveal that NEET/JEE aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations.

In this post we are providing you MCQ on Ohms law, which will be beneficial for you in upcoming NEET, AIIMS, JEE, WBJEE, Medical and Engineering Exams.

MCQ on Ohms law

Q1.If the conductor resistance is 50 ohm and the current passing through it is 5 A. What is the value of potential difference?
a) 150 V
b) 250 V
c) 15 V
d) 5 V

Q2. In a conductor, if 6-coulomb charge flows for 2 seconds. The value of electric current will be ______.
a) 3 ampere
b) 3 volts
c) 2 ampere
d) 2 volts

Q3. The current passing through a resistor in a circuit is 1 A when the voltage across the same resistor is 10 V. What is the value of current when the voltage across the resistor is 8 V ?
a) 0.8A
b) 8A
c) 80 A
d) 18 A

Q4. A potential difference of 10 V is applied across a conductor whose resistance is 2.5 ohm. What is the value of current flowing through it?
a) 4 amperes
b) 2 amperes
c) 6 amperes
d) 10 amperes

Q5. If a current of 5 Amperes flows through the conductor. The number of electrons per second will is ______.
a) 1.6 x 10^-19
b) 3.12 x 10^19
c) 4 x 10^19
d) 7.68 x 10^20

Q6. When the length of the conductor is doubled and the area of cross-section remains the same then its resistance ______.
a) Remains the same
b) Will be doubled
c) Will become half
d) Will increase by four times

Q7. Two resistors R1 and R2 with resistance 5 ohms and 10 ohms respectively are connected in series. The voltage across R1 is 4 V. What will be the value of current across R2.
a) 0.8A
b) 8A
c) 80A
d) 18A

Q8. Ohm’s law is true for ______.
a) Metallic conductors at low temperature
b) Metallic conductors at high temperature
c) For electrolytes, when current passes through them
d) For diode when current flows

Q9. An EMF source of 8.0 V is connected to a purely resistive electrical appliance. An electric current of 2.0 A flows through it. What is the resistance offered by the electrical appliances?
a) 4 ohm
b) 6 ohm
c) 2 ohm
d) 3 ohm

Q10. An example of non-ohmic resistance is ______.
a) Diode
b) Tungsten wire
c) Carbon resistance
d) Copper wire

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By Team Learning Mantras