## 50 J of energy is requried to move a charge of 5 C from point a to b. The voltage between two points is:

50 J of energy is requried to move a charge of 5 C from point a to b. The voltage between two points is: 5 V10 V25 V250 V

## SI Unit of electrical charge is

SI Unit of electrical charge is: NewtonCoulombTeslaWatts

## An electron is moving in circle of radius 4.5*10^-11 m at a frequency of 5.28*10^15 revolutions per second. The equivalent current is approximately

An electron is moving in circle of radius 4.5*10^-11 m at a frequency of 5.28*10^15 revolutions per second. The equivalent current is approximately: 4.2 * 10^-4 A2.3 * 10^-4 A5.86 * 10^-4 A8.45 * 10^-4 A

## If a piece of wire is melted and recast to half of its original length, the new resistance is

If a piece of wire is melted and recast to half of its original length, the new resistance is: RR/2R/42R

## A solid cube of silver has mass 50 g. Considering density of silver 10.5 g/cm³ and resistivity to be 0.0000016 Ωcm. The resistance between two opposite faces of cube will be

A solid cube of silver has mass 50 g. Considering density of silver 10.5 g/cm³ and resistivity to be 0.0000016 Ωcm. The resistance between two opposite faces of cube will be: 3.29 * 10^-7 Ω5.42 * 10^-7 Ω9.51 * 10^-7 ΩNone of these

## A potential difference of 6 V is applied across a conductor that has resistance 3 Ω. The number of electrons flowing in 1s are

A potential difference of 6 V is applied across a conductor that has resistance 3 Ω. The number of electrons flowing in 1s are: 1.07 * 10^191.21 * 10^191.25 * 10^191.39 * 10^19

## A copper wire having area of cross section 5 mm² is 5 meters long and carries a current of 5 A. The number density of free electrons is 8E+28. The time required by an electron to travel the length of wire is

A copper wire having area of cross section 5 mm² is 5 meters long and carries a current of 5 A. The number density of free electrons is 8E+28. The time required by an electron to travel the length of wire is: 14.32 h17.77 h25.96 h32.33 h

## For a 10 kΩ resistor, the change in voltage when current changes from 2 mA to 5.5 mA is

For a 10 kΩ resistor, the change in voltage when current changes from 2 mA to 5.5 mA is: 35 V50 V70 V120 V

## The electric power dissipated in a resistor in terms of its conductance G and voltage V across it is mathematically expressed in the form

The electric power dissipated in a resistor in terms of its conductance G and voltage V across it is mathematically expressed in the form: V²GV²/GGV²G/V²

## An electrical appliance consumes energy at a rate of 600 J/s. How many kWh it will consume in 4 h

An electrical appliance consumes energy at a rate of 600 J/s. How many kWh it will consume in 4 h: 1.2 kWh2.4 kWh3 kWhNone of these