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PUNJAB BOARD PREVIOUS YEAR PAPERS-QUESTION PAPER 2021-MULTIPLE CHOICE QUESTION
- In a current carrying conductor the ratio of the electric field and e...
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- When a wire is stretched and its radius becomes (r )/(2) then its res...
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- In charging a battery of a motor car, which effect of electric current...
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- Resistivity of a wire depends upon the :
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- Magnitude of the magnetic intensity of a point due to a current in a ...
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- Magnetism in substances is caused by:
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- The resistance of an ideal ammeter is
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- Calculate the value of resistance needed to coavert a galvanometer of ...
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- Magnetic meridian is a
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- The magnetic moment (mu) of a revovlign electron around the nucleus va...
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- Is there a magnetic force exerted by a magnetic field on a stationary ...
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- Gauss is a unit of :
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- A solenoid has 1000 turns per meter length. If a current of 5 A is flo...
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- SI unit of magnetic flux is :
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- Which of the following relations is correct ?
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- An induction furnance works on the principle of
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- Lenz's law gives
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- In a pure inductive circuit, current :
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- A coil has a resistance of 8 Omega and an inductive reactance of 6 Om...
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- What is the condition of resonance?
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