Doubling the strength of the magnetic field through a loop of wire produces what kind of change on the induced emf, assuming all other factors remain constant?

Doubling the number of loops of wire in a coil produces what kind of change on the induced emf, assuming all other factors remain constant?

The figure shows a magnetic field B to the right and 4 loops of equal areas, but at different orientations to the magnetic field. Which loop has the smallest magnetic flux?

To excite an atom, an incoming photon must have energy

Which colour of light emitted from an atom is associated with the least change in energy?

The energy to raise a hydrogen atom to the first excited state above the ground level is 10.2 eV, and the ionization energy of hydrogen is 13.6 eV.

Which of the following could happen if a photon of energy 14.8 eV enters a hydrogen atom in the ground state?

What model of the atom is successful in describing the spectra of atomic hydrogen and hydrogen-like ions?

A charge of 2 X 10^-7 C is acted upon by a force of 0.1N. Determine the distance to the other charge of 4.5 X 10^-7 C with both the charges in vacuum.

Which among the following statements is true with regard to electric field lines?