Question Library

If a reverse-biased voltage is applied across a p-n junction, the depletion layer width is

The capacitance of a parallel plate capacitor is 20 μf in air and 60 μf in the presence of a dielectric. What is the dielectric constant?

The electrical properties of germanium can be altered drastically by the addition of impurity. This process is referred to as

In the circuit above, three resistors, 2\Omega, 4\Omega and 12\Omega are connected in parallel and a 12V battery is connected across the combination. The current flowing through the 12\Omega resistors is

Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them. What is the total current in the circuit?

The d.c generator has essentially the same components as the a.c generator except the presence of?

\(^{14}_7\)N + \(^4_2\)He → \(^{17}_8\)O + X In the equation above, the particles X is?

A charge 50 µc has electric field strength of 360 NC-1 at a certain point. The electric field strength due to another charge 120 µc kept at the same distance apart and in the same medium is?

Silicon doped with aluminum and germanium doped with arsenic become?

Three cells each of e.m.f 1.5 V and internal resistance 2.5Ω are connected as shown in the diagram above. Find the net e.m.f and the internal resistance

from the diagram above, the inductive reactance and the resistance R are respectively

The production and type of charge of a body can only be accounted for by the?

The main purpose of the transformer in an a.c radio set is to?

During electrolysis, 2.0 g of a metal is deposited using a current of 0.5 A in 3 hours. The mass of the same metal which can be deposited using a current of 1.5 A in 1 hour is?

An ammeter of resistance 5Ω has a full-scale deflection when a current of 50 mA flows in it. The value of the resistor required to adapt it to measure a current of 5 A is?