XII Physics Current Electricity Online Test Mdcat-2024

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current Electricity online test

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    XII Phyiscs Current Electricity Online Test Mdcat-2024



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    1. What is equivalent resistance between A and B?

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    2. The total equivalent resistance between these two points in the shown circuit:

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    3. What is effective resistance of this whole circuit:

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    4. Conduction electrons move to the right in a certain wire. This indicates that:

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    5. When a wire is stretched double of is length, then its resistance will be:

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    6. The following four wires are made of the. same material and are at the same temperature. Which one of them has highest electrical resistance

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    7. Fractional change in resistance per Kelvin is known as:

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    8. Electrical energy is converted to heat at the rate of :

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    9. A car battery has EMF of 12 Volts and internal resistance 5x 10^-2 ohm. If it draws 60 ampere current, then terminal voltage of the battery will be:

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    10. When the current is neither drawn from a source nor given to it:

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    11. ohm's law Is true:

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    12. For a metallic wire, the ratio of V/I (V = the applied potential difference , I = current)

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    13. Resistivity of a conductor depends upon:

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    14. To increase current, batteries of different EMF are connected in:

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    15. The length of the wire is doubled, its conductance will

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    16. The resistance of a material increases with temperature. It is a:

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    17. Length of two wires of same material have ratio 2:3 and their radii have the ratio 1:2 Then the ratio of their resistances is:

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    18. Two bulbs are working in parallel order. Bulb A is brighter than bulb B. If RA and RB are their resistance respectively then:

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    19. A 60-watt light bulb carries a current of 0.5 A. The total charge passing through it in one hour is:

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    20. When a bulb is connected with a battery it gives certain brightness after increasing potential of battery by 20% then its power dissipation will increase by:

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    21. Which of the following is the unit for the electric power delivered by the source:

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    22. A 100 W electric bulb is lighted for 2 hrs daily and four 40-watt bulbs are lighted for 4 hrs every day. Calculate the energy consumed in kWh in 30 days

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    23. When a wire is stretched and its radius becomes r/2, then its resistance will be

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    24. When a battery is charged then its EMF and V are related as:

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    25. Which of the following substance work as internal resistor in any battery:

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    26. When a ordinary battery is delivering current to any resistor at terminal end then its EMF and V are related as:

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    27. Thermocouple converts which form of energy into electric energy:

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    28. Which of the following is the negative temperature coefficient material:

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    29. In Ohm's law, which factor remains constant:

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    30. Ohm.meter and Volt/meter respectively are the units of:

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    31. Total number of electrons present in 4-amp current flowing for 1 sec is:

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    32. When the internal resistance 'r of a source is equal to the load resistance, 'R the maximum power output is given by:

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    33. The current which is assumed to be flowing in a circuit from positive terminal to negative, is called:

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    34. Drift is the random motion of the electrons within a conductor:

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    35. The temperature coefficient of resistivity is independent of:

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    36. The ratio of electric current to potential difference is known as

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    37. With the increase of temperature, the conductance of wire

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    38. The S.I Unit of conductivity is:

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    39. The current which flows from higher potential to the lower potential is known as

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    40. Two wires A and B are made of copper both wires are 1m long but wire A is 1 mm thick and wire B is 2mm Thick. The specific resistance:

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    41. Equivalent resistance of the combination of different resistance in parallel combinations will:

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    42. When a wires of any resistance is bended and curved then its resistance would be:

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    43. Area under curve for the ohmic graph represent:

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    44. All those devices obeying ohm's law are:

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    45. Direction of current in a circuit is same as that of:

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    46. Moving charge in space can produce:

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    47. Direction of electron moving in a circuit is:

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    48. Resistances of 2.0 Ohm, 4.0 Ohm, and 6.0 Ohm and a 24-V EMF device are all in series.
    Current in all resistors is:

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    49. Resistances of 2.0 Ohm, 4.0 Ohm, and 6.0 Ohm and a 24-V EMF device are all in parallel. The current in the 2.0 Ohm resistor is:

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    50. A battery with an EMF of 12 V and an internal resistance of 1 Ohm is used to charge a battery with an EMF of 10 V and an internal resistance of 1 Ohm. The current in the circuit is:

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