A rod PQ is connected to the capacitor p...

A rod `PQ` is connected to the capacitor plates. The rod is placed in a magnetic field `(B)` directed downwards perpendicular to the plane of the paper. If the rod is pulled out of magnetic field with velocity `vec(v)` as shown in Figure.

(a) Plate `M` will be positively charged.

(b) Plate `N` will be positively charged.

( c) Both plates will be similarly charged.

(d) No charge will be collected on plates.

Text Solution

Verified by Experts

The correct Answer is:

(a) Consider the force on an electron in `PQ`. This electron experiences a force towards `Q`. Free electrons in `PQ` tend to move towards `N`. So `M` will be positively charged.

Topper's Solved these Questions

ELECTROMAGNETIC INDUCTION
CENGAGE PHYSICS ENGLISH|Exercise Exercises Multiple Correct|23 Videos
ELECTROMAGNETIC INDUCTION
CENGAGE PHYSICS ENGLISH|Exercise Exercises Asserton - Reasoning|8 Videos
ELECTROMAGNETIC INDUCTION
CENGAGE PHYSICS ENGLISH|Exercise Exercises Subjective|13 Videos
ELECTRICAL MEASURING INSTRUMENTS
CENGAGE PHYSICS ENGLISH|Exercise M.C.Q|2 Videos
ELECTRON,PHONTS,PHOTOELECTRIC EFFECT & X-RAYS
CENGAGE PHYSICS ENGLISH|Exercise dpp 3.3|15 Videos

Similar Questions

Explore conceptually related problems

A wire is bent in the form of a V shape and placed in a horizontal plane.There exists a uniform magnetic field B perpendicular to the plane of the wire. A uniform conducting rod starts sliding over the V shaped wire with a constant speed v as shown in the figure. If the wire no resistance, the current in rod wil

Statement I: A resistance R is connected between the two ends of the parallel smooth conducting rails. A conducting rod lies on these fixed horizontal rails and a uniform constant magnetic field B exists perpendicular to the plane of the rails as shown in Fig. if the rod is given a velocity upsilon and released as shown in Fig. 3.188, it will stop after some time. the total work done by magnetic field negative. Statement II: If force acts opposite to direction of velocity its work done is negative.

A U - shaped conducting frame is fixed in space. A conducting rod CD lies at rest on the smooth frame as shown. The frame is in a uniform magnetic field B_0 which is perpendicular to be plane of the frame . At the time t = 0 , the magnitude of the magnetic field being to change with time t as, B =B_0/(1+kt) , where k is a positive constant . For no current to be ever induced in the frame the speed with which rod should be pulled starting from time t = 0 is (the rod CD should be moved such that its velocity must lie in the plane of frame and perpendicular to rod (CD)

A conducting rod MN of mass m and length 'l' is placed on parallel smooth conducting rails connected to an uncharged capacitor of capacitance C and a battery of emf epsilon as shown. A uniform magnetic field B is existing perpendicular to the plane of the rails. The steady state velocity acquired by the conducting rod MN after closing switch S is (neglect the resistance of the parallel rails and the conducting rod)

In the figure shown a uniform conducing rod of mass m and length l is suspended invertical plane by two conducing springs of spring constant k each. Upper end of springs are connected to each other by a capacitor of capacitance C. A uniform horizontal magnetic field (B_(0)) perpendicular to plane of springs in space initially rod is in equillibrium. If the rod is pulled down and released, it performs SHM. (Assume resistance of springs and rod are negligible) Find the period of oscillation of rod.

A metallic rod of length l is hinged at the point M and is rotating about an axis perpendicular to the plane of paper with a constant angular velocity omega . A uniform magnetic field of intensity B is acting in the region (as shown in the figure) parallel to the plane of paper. The potential difference between the points M and N

The potential difference across the ends of the rod moving with velocity v perpendicular magnetic field is

A rod AB moves with a uniform velocity v in a uniform magnetic field as shown in figure

A conducting rod AC of length 4l is rotated about point O in a uniform magnetic field vec(B) directed into the plane of the paper. AO = l and OC = 3l . Find V_(A) - V_(C) .

CENGAGE PHYSICS ENGLISH-ELECTROMAGNETIC INDUCTION-Exercises Single Correct

Two circular, similar, coaxial loops carry equal currents in the same...
Text Solution
|
A rectangular coil ABCD is rotated anticlockwise with a uniform angula...
Text Solution
|
A rod PQ is connected to the capacitor plates. The rod is placed in a ...
Text Solution
|
A flexible wire bent in the form of a circle is place in a uniform mag...
Text Solution
|
A thin circular ring of area A is held perpendicular to a uniform magn...
Text Solution
|
A wire is bent to form the double loop shown in figure. There is a uni...
Text Solution
|
A wire is sliding as shown in Figure. The angle between the accelerati...
Text Solution
|
A conducting ring of radius 'r' is rolling without slipping with a con...
Text Solution
|
A 0.1 m long coductor carrying a current of 50 A is held perpendicular...
Text Solution
|
A conducting wire xy of lentgh l and mass m is sliding without frictio...
Text Solution
|
The linear loop has an area of 5 xx 10^(-4)m^(2) and a resistance oof ...
Text Solution
|
A circuit ABCD is held perpendicular to the uinform magnetic field of ...
Text Solution
|
a conducting wire os mass m slides down two smooth conducting bars, se...
Text Solution
|
Shows a copper rod moving with velocity v parallel to a long straight ...
Text Solution
|
A rectangular loop with a sliding conductor of length l is located in ...
Text Solution
|
A wire ab of length l, mass m and resistance R slided on a smooth, thi...
Text Solution
|
A plane loop, shaped as two squares of sides a = 1m and b = 0.4m is in...
Text Solution
|
A conductor of length l and mass m can slide without any friction alon...
Text Solution
|
A rectangular loop of sides 10 cm and 5 cm with a cut is stationary be...
Text Solution
|
A magnetic flux through a stationary loop with a resistance R varies d...
Text Solution
|