Two point charges 100μC and 5μC are placed at points A and B respectively with AB=40 cm.The workdone by external force in displacing the charge 5μC from B to C is.. Here BC=30 cm, ∠ABC=π/2 and 1/4πε0=9 x 10^9 Nm^2/C^2

Question:

Two point charges 100μC and 5μC are placed at points A and B respectively with AB=40 cm.The workdone by external force in displacing the charge 5μC from B to C is.. Here BC=30 cm, ∠ABC=π/2 and 1/4πε₀=9 x 10⁹ Nm²/C²

Options :

(a) 9 J
(b) 81/20 J
(c) 9/25 J
(d) -9/4 J

Answer :

(d) -9/4 J

Answer Steps :

step 1

step 2

Video Tutorial

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

Online Support

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:

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

Access To All Courses from VgyanHub

Popular Courses

Company

Need Some Help?