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Find the magnetic field at P due to the arrangement shown
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If the magnitude of the resultant magnetic field inductions at the points A, B and C due to the infinitely long parallel conductors carrying currents in the direction shown are B. B and B respectively then, the ascending order of magnetic fields induction are
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A galvanometer of resistance ,shunted by a resistance of 5 ohm gives a deflection of 50 divisions when joined in series with a resistance of and a 2 volt accumulator. What is the current sensitivity of the galvanometer (in div/(A) ?
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A galvanometer has a current sensitivity of 1mA per division. A variable shunt is connected across the galvanometer and the combination is put in series with a resistance of and cell of internal resistance . It gives a deflection of 5 division for shunt of 5 ohm and 20 division for shunt of 25 ohm. Find the emf of cell and resistance of galvanometer.
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A long horizontal wire AB which is free to move in vertical plane and carries a steady current 20A, is in equilibrium at a height of 0.1 meter above another parallel long wire CD, which is fixed in horizontal plane and carries current 30A, as shown in the figure. Find the time period of oscillations when AB is slightly depressed
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A particle of charge Q and mass M moves in a circular path of radius R in a uniform magnetic field of magnitude B. The same particle now moves with the same speed in a circular path of same radius R in the space between the cylindrical electrodes of the cylindrical capacitor. The radius of the inner electrode is R/2 while that of the outer electrode is 3R/2. Then the potential difference between the capacitor electrodes must be
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A particle moving with velocity v having specific charge (q/m) enters a region of magnetic field B having width at angle 53° to the boundary of magnetic field. Find the angle q in the diagram.
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A charged particle enters a uniform magnetic field perpendicular to its initial direction travelling in air. The path of the particle is seen to follow the path in figure. Which of statements 1-3 is/are correct? [1] The magnetic field strength may have been increased while the particle was travelling in air [2] The particle lost energy by ionising the air [3] The particle lost charge by ionising the air
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