1. The _______ law states that potential difference is directly proportional to current.
(A) Coulomb’s
(B) Kirchhoff's voltage
(C) Ohm's
(D) Lenz's
2. According to Ohm's law
(A) V = IR
(B) Q = CV
(C) R = ρL / A
(D) B = Ø/A
3. According to Ohm's law, with the increase in potential difference current _______
(A) Fluctuates
(B) Decreases
(C) Remains constant
(D) Increases
4. When current flows through a circuit, having 20Ω resistance, the amount of applied voltage is 100v then the current is:
(A) 4A
(B) 12A
(C) 7A
(D) 5A
5. The resistance is directly proportional to the _______ of the conductor.
(A) Length
(B) Breadth
(C) Thickness
(D) Width
6. Resistance is ______ proportional to the cross section area of conductor.
(A) Directly
(B) Not
(C) Inversely
(D) Any of above
7. The resistance of a conductor depends on the _______.
(A) Temperature
(B) Collision
(C) Colour
(D) Friction
8. The Greek letter "Rho" denotes the _______
(A) Conductivity
(B) Resistivity
(C) Malleability
(D) Permeability
9. Conductors _______ current to flow easily.
(A) Block
(B) Stop
(C) Allows
(D) Conduct
10. Conductors have _______ number of electrons in their structure.
(A) Small
(B) Large
(C) Random
(D) Swift
11. The ability to conduct is _______.
(A) Electricity
(B) All of above
(C) Resistivity
(D) Conductivity
12. The opposition offered to free electrons is _______.
(A) Conductance
(B) Resistance
(C) Torque
(D) Current
13. Resistance adds up in _______.
(A) Series parallel
(B) Parallel
(C) Series
(D) Any of above
14. P.D stands for _______.
(A) Power Display
(B) Power driven
(C) Proportional difference
(D) Potential difference
15. In series circuit of resistances, the voltage _______ in each resistor.
(A) Increases
(B) Decreases
(C) Drops
(D) Constant
16. Current remains _______ in series circuits.
(A) Constant
(B) Decreasing
(C) Increasing
(D) Oscillating
17. Voltage remains _______ in parallel circuits.
(A) Increasing
(B) Constant
(C) Divides
(D) Decreasing
18. Current _______ in parallel circuit of resistances.
(A) Increases
(B) Decreases
(C) Divides
(D) Constant
19. The rate of doing work is called _______
(A) Energy
(B) Joule
(C) Power
(D) Voltage
20. The relationship for power is P = _______
(A) C × V
(B) Q/t
(C) V × I
(D) I / R