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Heating and Chemical Effect of Current Physics - Heating and Chemical Effect of Current

Uttarakhand Board (UBSE) - STD 12 Science - Physics (Uttarakhand - English Medium). 295 questions in this chapter.

Question types

Heating and Chemical Effect of Current question types

295 questions across 1 question group — pick any mix to generate a Physics paper with step-by-step answer keys.

295
Questions
1
Question groups
5
Question types
Sample Questions

Heating and Chemical Effect of Current questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark
Assertion : Electric appliances with metallic body; e.g. heaters, presses etc, have three pin connections, whereas an electric bulb has a two pin connection.
Reason : Three pin connections reduce heating of connecting cables.
  • A
     If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • ✓
     If assertion is true but reason is false.
  • D
     If the assertion and reason both are false.

Answer: C.

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Q 2M.C.Q (1 Marks)1 Mark
Assertion : Heat is generated continuously is an electric heater but its temperature becomes constant after some time.
Reason : At the stage when heat produced in heater is equal to the heat dissipated to its surrounding the temperature of heater becomes constant.
  • ✓
     If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
     If the assertion and reason both are false.

Answer: A.

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Q 3M.C.Q (1 Marks)1 Mark
The magnetic induction at a point P which is distant 4 cm from a long current carrying wire is $10^{-18}$ tesla. The field of induction at a distance 12 cm from the same current would be
  • A
    $ 3.33\times 10^{-9} $ tesla
  • B
    $ 1.11\times 10^{-4} $ tesla
  • ✓
    $3 \times 10^{-3} $ tesla
  • D
    $ 9 \times 10^{-2} $ tesla

Answer: C.

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Q 4M.C.Q (1 Marks)1 Mark
Assertion : The presence of water molecules makes separation of ions easier in electrolyte.
Reason : The presence of water molecules in electrolyte decreases the resistance of electrolyte.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • ✓
     If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
     If the assertion and reason both are false.

Answer: B.

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Q 5M.C.Q (1 Marks)1 Mark
Assertion : In all conductors, for studying the thermoelectric behaviour or metals, lead is taken as a reference metal.
Reason : In lead, the Thomson effect is negative.
  • A
     If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
     If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • ✓
     If assertion is true but reason is false.
  • D
     If the assertion and reason both are false.

Answer: C.

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