AE & JE EE Quiz: Basic Electrical and Network Theory Booster Quiz -4

Area of cross-section of copper wire is 3 × 10^–6 m². It carries a current of 5A. calculate the drift velocity of electronic if number of densities of conduction electrons is 7.4 × 10²⁸ m^–3.

A conductor having resistance R₀ at 0°C and R_t at t°C. What is the temperature co-efficient of resistance.

The rate of which work is done in an electric circuit is called?

If 500 J of work is done in carrying a charge of 3C from a place where the potential is –20V to another place where potential is V. calculate the value of V

In order to produce a flux of 100 μwb in an air gap of length 0.2 mm and area of cross section is 1 cm², the MMF required is: -

Unit of permeance is?

A horizontal straight wire is 10 cm long of mass 1.2 g/m is placed perpendicular to a uniform magnetic field of 0.6T. if resistance of wire is 3.8 Ω/M. Calculate the potential difference that has to be applied between the end of the wire to make it just self-supporting.

The total voltage across the series combination of 30 Ω and R Ω resistors is 120 V. If the voltage across R Ω resistor is 80 V, then the value of R is

In the given figure, the value of current I₄ is

The element which is not capable of delivering energy by its own is known as:-