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

## MCQs.net Latest Questions

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: 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: 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: 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: 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: 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: 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: V²GV²/GGV²G/V²

The maximum possible conductance of a 80 kΩ, 20% resistor is: 32 µS64 µS128 µSNone of these