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ICSE Class 10 Electricity: Ohm's law, electrical power and energy, household circuits — practice questions

Explore 50 free Electricity: Ohm's law, electrical power and energy, household circuits questions in ICSE Class 10 Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Electricity: Ohm's law, electrical power and energy, household circuits questions and exercises with answers

Showing questions 1–30 of 50.

For an ohmic conductor, how are voltage, current and resistance related?Read the answer and worked solution →Electrical appliance power is commonly stated in what unit?Read the answer and worked solution →Which unit is used for electric current?Read the answer and worked solution →In a series circuit, what is the same through every component?Read the answer and worked solution →In a series circuit, what equals the supply voltage?Read the answer and worked solution →How is total resistance found for resistors in series?Read the answer and worked solution →What happens to total current at a parallel junction?Read the answer and worked solution →What does a fuse do when too much current flows?Read the answer and worked solution →An earthing system connects equipment to what?Read the answer and worked solution →What is one common cause of a short circuit in a device?Read the answer and worked solution →In P = I²R, what does R represent?Read the answer and worked solution →One watt is equal to what?Read the answer and worked solution →Which property describes a material’s intrinsic opposition to current?Read the answer and worked solution →What does greater wire length do to resistance?Read the answer and worked solution →For the same material and length, what does a thicker wire have?Read the answer and worked solution →Which metal is a high-conductivity electrical conductor?Read the answer and worked solution →A material’s intrinsic resistance property is measured in which unit?Read the answer and worked solution →What protection does a fuse provide to a circuit?Read the answer and worked solution →What safety role does earthing serve?Read the answer and worked solution →In a parallel circuit, what is the same across all branches?Read the answer and worked solution →In a series circuit, what is true about its paths?Read the answer and worked solution →What does a parallel circuit do to total current?Read the answer and worked solution →How is electrical power defined for a circuit?Read the answer and worked solution →How is a fuse connected so all protected current passes through it?Read the answer and worked solution →What happens to a series circuit if one component opens?Read the answer and worked solution →A 12 V supply is across a 4 Ω resistor. What current flows?Read the answer and worked solution →A 0.5 A current flows through 20 Ω. What voltage is across it?Read the answer and worked solution →Three resistors of 3 Ω, 4 Ω and 5 Ω are in series. Find total resistance.Read the answer and worked solution →Two resistors, 6 Ω and 3 Ω, are in parallel. What is their equivalent resistance?Read the answer and worked solution →What current flows through a 2 Ω resistor on a 12 V supply?Read the answer and worked solution →

Worked practice questions

For an ohmic conductor, how are voltage, current and resistance related?

  1. V equals I plus R
  2. V equals I times R
  3. R equals V times I
  4. I equals V times R
Show answer and solution

Correct answer: B. V equals I times R

Ohm’s law gives V = I R for an ohmic conductor.

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Electrical appliance power is commonly stated in what unit?

  1. Volt
  2. Ampere
  3. Watt
  4. Joule
Show answer and solution

Correct answer: C. Watt

Electric power is measured in watts.

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Which unit is used for electric current?

  1. Joule
  2. Watt
  3. Ohm-metre
  4. Ampere
Show answer and solution

Correct answer: D. Ampere

Current is measured in amperes.

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