NCERT Exemplar Problems Class 12 Physics Chapter 7 Alternating Current Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. If the rms current in a 50 Hz AC circuit is 5 A, the value of the current 1/300 s after its value becomes zero is Solution: (b) Key concept: Equation for i and V:…
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NCERT Exemplar Problems Class 12 Physics Chapter 6 Electromagnetic Induction Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. Solution: (c) Key concept: Magnetic flux is defined as the total number of magnetic lines of force passing normally through an area placed in a magnetic field and is equal to the magnetic flux linked…
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NCERT Exemplar Problems Class 12 Physics Chapter 5 Magnetism and Matter Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. A toroid of n turns, mean radius R and cross-sectional radius a carries current I. It is placed on a horizontal table taken as xy-plane. Its magnetic moment m (a) is non-zero and points…
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NCERT Exemplar Problems Class 12 Physics Chapter 4 Moving Charges and Magnetism Multiple Choice Questions Single Correct Answer Type Question 1. Two charged particles traverse identical helical paths in a completely oppo-site sense in a uniform magnetic field B = B0k (a) They have equal z-components of momenta (b) They must have equal charges (c)…
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NCERT Exemplar Problems Class 12 Physics Chapter 3 Current Electricity Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. Consider a current carrying wire (current 7) in the shape of a circle. Note that as the current progresses along the wire, the direction of j (current density) changes in an exact manner, while the…
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NCERT Exemplar Problems Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance Multiple Choice Questions Single Correct Answer Type Question 1. A capacitor of 4 μF is connected as shown in the circuit. The internal resistance of the battery is 0.5 Ω. The amount of charge on the capacitor plates will be (a) 0 (b)…
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NCERT Exemplar Problems Class 12 Physics Chapter 1 Electric Charges and Fields Multiple Choice Questions Single Correct Answer Type Question 1. In figure two positive charges q2 and q3 fixed along the y-axis, exert a net electric force in the +x-direction on a charge q1, fixed along the x-axis. If a positive charge Q is…
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NCERT Exemplar Problems Class 6 Science Food Where Does It Come From Components of Food Fibre to Fabric Sorting Materials Into Groups Separation of Substances Changes Around Us Getting to Know Plants Body Movements The Living Organisms and Their Surroundings Motion and Measurement of Distances Light Shadows and Reflection Electricity and Circuits Fun with Magnets…
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NCERT Exemplar Problems Class 6 Science – Garbage In Garbage Out Question 1: The method of preparing compost with the help of earthworms, is called (a) composting (b) vermicomposting (c) manuring (d) decomposing Solution: (b) Vermicomposting is a method of preparing compost with the help of earthworms. It is an excellent method of getting the…
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NCERT Exemplar Problems Class 6 Science – Air Around Us Question 1: Which of the following statements is incorrect? (a) All living things require air to breathe (b) We can feel air but we cannot see it (c) Moving air makes it possible to fly a kite (d) Air is present everywhere but not in…
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