A beam contains 2 × 10^8 doubly charged positive ions per cubic centimeter, all of which are moving with a speed of 10^5m/s. The current density is - VgyanHub

Question:

A beam contains 2 × 10^8 doubly charged positive ions per cubic centimeter, all of which are moving with a speed of 10^5m/s. The current density is

Options :

a) 6.4 A/m^2
b) 3.2 A/m^2
c) 1.6 A/m^2
d) None of these

Answer :

a) 6.4 A/m^2

Answer Steps :

Step:-1

Step:-2

Video Tutorial

Related Questions

An alternating voltage source is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is:

A 1 µF condenser is charged to 50 V. The charging battery is then disconnected and a 10 mH coil is connected across the capacitor so that LC oscillations occur. What is the maximum current in the coil ? Assume that the circuit contains no resistance. The capacity of a pure capacitor is 1 F. In d.c. circuits, its effective resistance will be

In an a. c. circuit the instantaneous current and e.m.f. are represented as: I = I0 sin(ωt – π/6) and E = E0 sin(ωt + π /3) respectively. The voltage leads the current by

Explore Our Courses