Alternating Current Class 12 Important Questions Very Short Answer Type Question 1.The instantaneous current and voltage of an a.c. circuit are given by i = 10 sin 300 t A and V = 200 sin 300 t V. What is the power dissipation in the circuit? (All India 2008)Answer: Question 2.The instantaneous current and voltage …
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Electromagnetic Induction Class 12 Important Questions Very Short Answer Type Question 1.A plot of magnetic flux (ϕ ) versus current (I) is shown in the figure for two inductors A and B. Which of the two has larger value of self inductance? (Delhi 2010)Answer:Since ϕ = LI∴ L = ϕI = slopeSlope of A is greater than …
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Magnetism and Matter Class 12 Important Questions Very Short Answer Type VSA Questions 1.The permeability of a magnetic material is 0.9983. Name the type of magnetic materials it represents. (Delhi 2011)Answer:It represents diamagnetic materials. Question 2.The susceptibility of a magnetic material is 1.9 × 10-5. Name the type of magnetic materials it represents. (Delhi 2011)Answer:It …
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Moving Charges and Magnetism Class 12 Important Questions Very Short Answer Type Question 1.What is the direction of the force acting on a charged particle q, moving with a velocity v→ in a uniform magnetic field B? (Delhi)Answer:The direction of the force acting on a charged particle q, moving with a velocity v→ in a uniformmagnetic field B→ is perpendicular to …
Important Questions for Class 12 Physics Chapter 4 Moving Charges and Magnetism Read More »
Current Electricity Class 12 Important Questions Very Short Answer Type Question 1.The plot of the variation of potential difference across a combination of three identical cells in series, versus current is as shown in the figure. What is the emf of each cell? (Delhi 2008)Answer:Total emf of three cells in series = P.D corresponding to …
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Electrostatic Potential and Capacitance Class 12 Important Questions Very Short Answer Type Question 1.A 500 µC charge is at the centre of a square of side 10 cm. Find the work done in moving a charge of 10 µC between two diagonally opposite points on the square. (Delhi 2008)Answer:The work done in moving a charge …
Electric Charges and Fields Class 12 Important Questions Very Short Answer Type Question 1.Which orientation of an electric dipole in a uniform electric field would correspond to stable equilibrium ? (All India 2008)Answer:When dipole moment vector is parallel to electric field vectorP→∥E→ Question 2.If the radius of the Gaussian surface enclosing a charge is halved, …
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Probability Important Questions for CBSE Class 12 Maths Baye’s Theorem and Probability Distribution Previous Year Examination questions 4 Marks Questions 6 Marks Questions
Probability Important Questions for CBSE Class 12 Maths Conditional Probability and Independent Events Previous Year Examination Questions 4 Marks Questions 6 Marks Questions
Important Questions for CBSE Class 12 Maths Linear Programming Previous Years Examination Questions 6 Marks Questions>
