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Figure below show regular hexagons, with charges at the vertices. In which case, the electric field at the centre

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Two parallel infinite line charges `+ lambda and -lambda` are placed with a separation distance R in free space. The net electric field exactly mid-way between the two line charges

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Capacitance between points A and B

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Assertion: An electron moves from a region of lower potential to a region of higher potential. Reason: An electron has a negative

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Assertion: The expression of potential energy `U=1/(4piepsilon_0)(q_1q_2)/(r_(12))` is unaltered whatever way the charges are brought to the specified locations. Reason: Path-independence of work for electrostatic

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In the circuit shown in figure, `E_1=10V, E_2=4 V , r_1 = r_2 = 1Omega and R = 2Omega` Find the potential difference across battery 1 and battery

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The algebraic sum of voltages around any closed path in a network is equal

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Assertion: If a current is flowing through a conducting wire of non-uniform cross-section, drift speed and resistance both will increase at a section where cross-sectional area is loss. Reason: Current density at such sections is more, where cross-sectional area is

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Assertion: The drift velocity of electrons in a metallic wire decreases, when temperature of the wire increases. Reason: On increasing temperature, conductivity of metallic wire

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Biot-Savart’s law may be represented in vector form

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Magnetic field due to a ring having `n` turns at a distance `x` on its axis is proportional to (if, `r` = radius of

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The magnitude of the magnetic field inside a long solenoid is increased

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Which of the following point lies in the region of highest magnetic field strength

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The relations amongst the three elements of earth’s magnetic field namely : horizontal component `H_e` vertical component `V_e` and angle of dip `delta` are (`B_e` = total magnetic

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Angle of dip is maximum

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Lenz’s law of electromagnetic induction corresponds to the law of conservation

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In electromagnetic induction, the induced charge in a coil is independent

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Assertion: When two magnets are brought closer to each other, then they will always repel each other. Reason: According to Lenz’s law induced effects do not always opposes the

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Assertion: Faraday’s laws are consequence of conservation of energy. Reason: Earth’s magnetic field can induce

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Assertion: Inductance coil are made of copper. Reason: Induced current is more in wire having less

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