Recently Active Electricity And Magnetism Questions

Can we accelerate a charged particle by a magnetic field? ...

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Please Help me. I know it's a very easy problem for many of you out there. But somethings there I could not understand, please help me by devoting your few minutes. *Image* Find final Charges on each surface and the charge fl ...

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can anyone provide me the relation of how to find a potential diff at 2 points when no current is provided no velocity is given only resistance and B is provided ? ply do reply ...

*Image* what is the steady state charge on the capacitors?? pls describ in details...thanx, ...

Q: The potential drop V0 (in VOLTS) across a resistor varies as V0 = 2 i3/2 where ' i ' is the current in mA. Find the resistance of above device when V0 = 16 V. Q: A conducting sphere of radius ' a ' has charge Q on it. It i ...

Find the charge on 2μF capacitor in steady state : *Image* ...

*Image* A thick shell with inner radius R and outer radius 3R has a uniform charge density σ coulomb/meter cube it has a spherical cavity of radius R as shown in the fig. above, please find the electric field at the center o ...

A resistor of resistance R and temp. coeff. of resistivity=α is connected in parallel with a resistor of resistance 3R and temp. coeff. of resistivity=2α.Find equivalent α. ...

Two identical balls, each having a charge of 2x10-7C and a mass of 100g, are suspended from a common point by two insulating strings each 50cm long. The balls are held at a separation of 5cm apart. Find the components of the ...

1.A point charge Q is located on the axis of a disc of radius R at a distance a from the plane of the disc.If 1/4th of the flux from the charge passes through the disc,then find the relation between a and R..... seems pretty ...

A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5.0 m / s, at right angles to the horizontal component of the earth’s magnetic field, 0.30 × 10−4 Wb / m2. (a) What is the direc ...

a charged particle of mass 2 kg and chrge 2 C is projected with velocity v = 8i + 6j m/s in horizontal plane and there if magnetic field 2k (k cap) find the coeff of friction such that the particle travels in spiral path b4 c ...

*Image* QUESTION: Find equivalent resistance between A and B. ...

A CHARGE q is istributed uniformly over a large plastic plate.The electric feidl at point P,which is near the centre is 10V/m.Now the plate is replaced bya copper one and all the conditions of the previous problem are exact. ...

A solid sphere of radius R is charged uniformly.At what distance from its surface is the electrostatic potential half of the potential at the centre? 1) R 2) R/2 3) R/3 4) 2R I know the final answer.But how to solve this one? ...

1. A coil with inductance L=0.70H and active resistance r=20Ω is connected in series with an inductance-free resistance R. An alternating voltage with effective value V=220V and frequency ω=314 rad/s is applied across the t ...

*Image* ' find the compressional force on the ring of radius r carrying current i ,in a magnetic field as shown. Ans given is mew0*r*i ...

draw graph between V AND R ...

QUES. A long u shaped wire of width l placed in a perpendicular magnetic field B. A wire of length l is slide on the u shaped wire with a constant velocity u towards right. The resistance of all the wires is r per unit length ...

the diagram shows a metre with the wire 'AB' having uniform resistance per unit length.when the switch 'S' is open, AJ is the balance length and when the switch is closed, AJ' is the balance length. is AB = 4 m and AJ = 2m th ...

*Image* calculate the equivalent resistance across A B of this infinitely long ladder ...

can some one help me in drawing equivalent circuit (with some explaination pls) in these type of questions.. *Image* ...

Matrix Match Type: Q. *Image* ...

1. A current loop of any arbitrary shape lies in a uniform magnetic field B. Show that the net magnetic force acting on the loop is zero. 2. Prove that the force acting on a current carrying wire, joining two fixed points a a ...

1. A wire of resistance ' R ' and length ' L ' is connected to a d.c. source of emf V through a switch ' S ' . *Image* At t = 0, the switch ' S ' is closed and at the same time an external agent starts stretching the wire suc ...

*Image* Each plate has plate area S. Find the capacitance between A and B. Can anyone convert this to a series parallel combination ? I did by charge distribution and wrote Q=CV for all of them.(that takes at least 10 mins) C ...

A long cylindrical conductor of radius 'a' has 2 cylindrical cavities of diameter 'a' through its entire length as shown in the cross section in the fig . a current 'I' is directed out of the page and is uniform throughout th ...

*Image* Q18 (HCV). Figure shows a typical circuit for low-pass filter. An AC input Vi=10mV is applied at the left end and the output Vo is received at the right end. Find the output voltages for ν= 10kHz, 100kHz, 1.0MHz and ...