(a) A closed loop is held stationary in the magnetic field between the north and south poles of two permanent magnets held fixed. Can we hope to generate current in the loop by using very strong magnets? (b) A closed loop moves normal to the constant electric field between the plates of a large capacitor. Is a current induced in the loop (i) when it is wholly inside the region between the capacitor plates (ii) when it is partially outside the plates of the capacitor? The electric field is normal to the plane of the loop. (c) A rectangular loop and a circular loop are moving out of a uniform magnetic field region (Fig. 6.8) to a field-free region with a constant velocity v. In which loop do you expect the induced emf to be constant during the passage out of the field region? The field is normal to the loops. (d) Predict the polarity of the capacitor in the situation described by Fig. 6.9.

When the magnet as shown in the diagram, is moved towards the coil at a speed of 5 ms⁻¹, the galvanometer shows a certain deflection to the right. How will the direction and magnitude of deflection change when the coil also moves with a speed of 5 ms⁻¹:

TextElectromagnetic InductionElectrical Energy and Its CalculationAlpha, Beta and Gamma DecaySafety Precautions in Handling Radioactive Materials

Which element is used in the lining of the special aprons worn by workers in nuclear power plants?

TextElectromagnetic InductionElectrical Energy and Its CalculationAlpha, Beta and Gamma DecaySafety Precautions in Handling Radioactive Materials

Why is this element preferred?

TextElectromagnetic InductionElectrical Energy and Its CalculationAlpha, Beta and Gamma DecaySafety Precautions in Handling Radioactive Materials