Which of the following is required to convert a milliammeter to an ammeter?

The primary winding of a transformer has 400 turns and its secondary has 100 turns. If a source of e.m.f. of 12V is applied to the primary, the secondary e.m.f. will be

A light of energy 5eV falls on a metal and the electrons with a maximum kinetic energy of 2eV are ejected. The work function of the metal is

The half-life of a radio-active element is 9 days, what fraction of atoms has decayed in 36 days?

An alternating source is connected in series to a capacitor of capacity reactance \( 10^3 \sqrt{3} \) and a resistor of resistance 10³ Ohms. The Impedance of the circuit is...