Electromagnetic Waves — Physics STD 12 Science — Question

Gauss is unit of which quantity

(a) H

(b) B

(c) ∅

(d) I

Point A is at a lower electrical potential than point B. An electron between them on the line joining them will:

An electric dipole is kept in the origin with charges along the x axis, now choose the correct option,

Assertion  :   If a proton and an electron are placed in the same uniform electric field. They experience different acceleration.

Reason     : Electric force on a test charge is independent of its mass.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

Energy in a current carrying coil is stored in the form of:

A wire of resistor R is bent into a circular ring of radius r. Equivalent resistance between two points X and Y on its circumference, when angle XOY is a, can be given by

(a)

(b)

(c) R (2 p – a)

(d)

Some charge is being given to a conductor. Then its potential:

For an isolated object, the graph between potential and charge is given below. The capacity of an object is-