Start learning →

NDA Effects of Electric Current — practice questions

Explore 37 free Effects of Electric Current questions in NDA Science. Open each question or exercise to read its content, reference answers and available explanation.

Practise Effects of Electric Current with Quill →

Effects of Electric Current questions and exercises with answers

Showing questions 1–30 of 37.

CLASS10 · Physics · Magnetic Field RulesRead the answer and worked solution →CLASS10 · Physics · Magnetic Effect — Quick True/FalseRead the answer and worked solution →Match the rule to what it predicts (CBSE Cl 10 Magnetism)Read the answer and worked solution →Sort: AC or DC supply? (CBSE Cl 10)Read the answer and worked solution →True or false on magnetism (CBSE Cl 10)Read the answer and worked solution →Order the steps of motor operation (CBSE Cl 10)Read the answer and worked solution →Ohm's law states that the current I through a conductor is proportional to:Read the answer and worked solution →SI unit of electric current is:Read the answer and worked solution →Resistance R of a uniform wire of length L and cross-sectional area A is:Read the answer and worked solution →Two resistors of 6 Ω and 3 Ω are connected in PARALLEL. The equivalent resistance is:Read the answer and worked solution →Two resistors 6 Ω and 3 Ω are in SERIES. Their equivalent resistance is:Read the answer and worked solution →Heat produced in a resistor in time t (Joule's law) is:Read the answer and worked solution →An electric bulb is marked '60 W, 220 V'. The resistance of its filament is approximately:Read the answer and worked solution →1 kilowatt-hour (kWh), the commercial unit of electrical energy, equals:Read the answer and worked solution →An ideal ammeter has:Read the answer and worked solution →Resistivity of a metal as temperature increases:Read the answer and worked solution →Among Cu, Al, Fe and Hg, the BEST conductor of electricity at room temperature is:Read the answer and worked solution →A potential difference of 12 V drives a current of 3 A through a resistor. The resistance is:Read the answer and worked solution →The dimension of the volt is:Read the answer and worked solution →Domestic appliances in India are connected in:Read the answer and worked solution →Electric fuse is a SAFETY device that:Read the answer and worked solution →Oersted's discovery (1820) was that:Read the answer and worked solution →Magnetic field lines:Read the answer and worked solution →The magnetic field inside a long solenoid (with n turns per unit length, carrying current I) is:Read the answer and worked solution →Fleming's left-hand rule gives the direction of:Read the answer and worked solution →An electric motor converts:Read the answer and worked solution →Electromagnetic induction is the phenomenon of:Read the answer and worked solution →AC (Alternating Current) reverses its direction every:Read the answer and worked solution →The colour code in Indian household wiring is: live = red/brown, neutral = black/blue, earth =:Read the answer and worked solution →Earthing of an electrical appliance:Read the answer and worked solution →

Worked practice questions

CLASS10 · Physics · Magnetic Field Rules

Read exercise and reference answers
Matching pairs
  1. A
    Right-hand thumb rule
    B
    Current straight wire ↔ field direction
  2. A
    Right-hand grip rule (solenoid)
    B
    Curl fingers along current; thumb = N pole
  3. A
    Maxwell's corkscrew rule
    B
    Conventional current ↔ rotation of corkscrew
  4. A
    Fleming's left-hand rule
    B
    Force on current-carrying conductor (motor)
  5. A
    Fleming's right-hand rule
    B
    Induced current in a moving conductor (generator)
  6. A
    Solenoid's field inside
    B
    Uniform and parallel like a bar magnet's interior
Instructions
Match each electromagnetic rule to its statement.

Open this exercise →

CLASS10 · Physics · Magnetic Effect — Quick True/False

Read exercise and reference answers
Questions
  1. Statement is true
    Yes
    Statement
    A current-carrying conductor produces a magnetic field around it.
  2. Statement is true
    Yes
    Statement
    Magnetic field lines are closed curves.
  3. Statement is true
    No
    Statement
    Inside a solenoid, the field is non-uniform and weak.
  4. Statement is true
    Yes
    Statement
    The direction of induced EMF is given by Fleming's right-hand rule.
  5. Statement is true
    Yes
    Statement
    AC generators and motors use the same fundamental physics.
  6. Statement is true
    No
    Statement
    Earth's magnetic field is unrelated to a freely suspended bar magnet's orientation.
Instructions
Decide each electromagnetism statement.

Open this exercise →

Match the rule to what it predicts (CBSE Cl 10 Magnetism)

Read exercise and reference answers
Matching pairs
  1. Left
    Right-hand thumb rule
    Right
    Field direction around a wire
  2. Left
    Fleming's left-hand rule
    Right
    Force on a current in field
  3. Left
    Fleming's right-hand rule
    Right
    Induced current in a moving wire

Open this exercise →

How to practise

  1. Choose a Effects of Electric Current question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Effects of Electric Current practice for NDA. Read explanations as you go. No signup form needed to start.

Practise Effects of Electric Current →

More Science topics

Environmental & Disaster ManagementRefraction of Light and LensesScience & TechnologyLife Processes in Living Organisms Part 2Materials: Metals and Non-MetalsChemical Reactions and EquationsAcids, Bases and SaltsMetals and Non-metals