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What is the nature of gaussian surface involved in Gauss’s law of

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Two spheres have their surface charge densities in the ratio of 2 : 3 and their radii 3 : 2. The ratio of the charges on them i s

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Three capacitors each of capacitance C and of breakdown voltage `V` are joined in series. The capacitance of the combination will

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Work done in placing a charge of `8 xx 10^(-1) C` on a condenser of capacity `100 muF`

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A `5.0 muF` capacitor is charged to a potential difference of `800 V` and discharged through a conductor. The energy given to the conductor during the discharge

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If the charge on each plate of a capacitor of `60 muF` is `3 xx 10^(-8)C`, then energy stored in the capacitor will

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A proton released from rest in an electric field, will start moving towards a region of............potential in the

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Electrostatic potential energy is stored when a dipole is placed in the electric field. The energy is maximum at .........

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Assertion: Capacity of a parallel plate capacitor increases when distance between the plates is increased. Reason: Capacitance of a capacitor is directly proportional to distance between

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Consider first two cells in series as shown in figure. The potential difference between the terminals A and C of the combination

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Five conductors are meeting at a point `x` as shown in the figure. What is the value of current in fifth

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Assertion: A wire carrying an electrical current has no electric field inside it. Reason: Rate of flow of electrons in one direction is equal to the rate of flow of protons in opposite

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Assertion: Manganin and constantan are widely used in standard resistors. Reason: For manganin and constantan resistance, values would change very little with

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EMF of a CellAn electric cell is a source of energy that maintains a continuous flow of charge in a circuit. It changes chemical energy into electrical energy. It has two electrodes, positive electrode and negative electrode as shown below.Electric cell has to do some work in maintaining the current through a circuit. The work done by the cell in moving unit positive charge through the whole circuit (including the cell) is called the electromotive force (emf) of the cell. When R is infinite, then potential difference V between P and N

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Commercial Electrical EnergyAn electrical appliance uses a lot of electric energy when it is operated e.g., geysers heaters etc. The electrical energy consumed is dependent on the time for which a specific appliance of fixed power rating is used. However, the energy used in hour is denoted as `1 kWh=3.6 xx 10^6` joule. This is represented as 1 unit. Different electrical appliance have difference power consumption which is mentioned on the device clearly.A bulb is rated `60 W, 220 V`. It

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A cylindrical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field B with the distance d from the centre of the conductor, is correctly represented by the

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Two parallel wires carrying currents in the same direction attract each other because

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Equal current is being passed through two very long and straight parallel wires in the same direction. They will .......... each

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Assertion: The poles of magnet cannot be separated by breaking into two pieces. Reason: The magnetic moment will be reduced to half when a magnet is broken into two equal

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A circular disc of radius `0.2 m` is placed in a uniform magnetic field of induction `(1'/'pi) Wbm^(-2)` in such a way that its axis makes an angle of 60° with B. The magnetic flux linked with the disc

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

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