03:16

The moment of the force F=4i+5j-6k at (2,0,-3) about the point (2,-2,-2) is given by

02:13

what is the value of linear velocity,if r=3i-4j+k and w=5i-6j+6k?

03:29

A string is wrapped around the rim of a wheel of moment of inertia 0.40kgm^2 and radius 10cm.The

03:51

compare the power used in the 2ohm resistor in each of the following circuits 1)a 6v battery in

03:04

A light rope is wound around a hollow cylinder of mass 5kg and radius 70cm.The rope is pulled with a

03:14

how can three resistors of resistances 2ohm,3ohm and 6ohm be connected to give a total resistance

02:01

what is a)the highest b)the lowest total resistance that can be secured by combinations of four coil

03:17

Find the acceleration of centre of mass of blocks of masses m1 and m2 [M1 greater than M2] in At

05:22

A copper wire has diameter 0.5mm and resistivity of 1.6×10^-8 ohm metre.What will be the length of

03:19

Two conducting wires of the same material and of equal lengths and equal diameters are first connect

02:45

Resistance of a metal wire of length 1m is 26 ohm at 20°c.If the diameter of the wire is 0.3mm,

01:50

A battery of 9v is connected in series with resistors of 0.2ohm,0.3ohm,0.4ohm,0.5ohm and 12 ohm

01:39

Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potent

01:17

An electric iron of resistance 20 ohm takes a current of 5A. Calculate the heat developed in 30s

01:41

An electric motor takes 5A from a 220v line. Determine the power of the motor and the energy consume

03:09

Show how you would connect three resistors,each of resistance 6ohm,so that the combination has a

02:23

Several electric bulbs designed to be used on a 220v electric supply line,are rated 10 W.How many

01:50

A piece of wire of resistance R is cut into five equal parts.These parts are then connected in

03:06

Two lamps one rated 100w at 220v,and the other 60w at 220v,are connected in parallel to electricity

01:58

An electric heater of resistance 8 ohm draws 15 A from the service mains 2 hours. Calculate the rate

02:03

an electric bulb is rated 220v and 100w. when it is operated on 110v the.power consumed will be

01:35

When a 12V battery is connected across an unknown resistor,there is a current of 2.5mA in the

03:12

Three identical spheres each of mass M are placed at the corners of a right angled triangle with

03:57

Three identical spheres each of mass 2M are placed at the corners of a right angled triangle with

02:16

How many 176 ohm resistors (in parallel)are required to carry 5A on a 220V line?

02:25

Which uses more energy,a 250w TV Set in 1hr,or a 1200w toaster in 10 minutes?

05:33

Redraw the circuit of question 1, putting in an ammeter to measure the current through the resistors

01:51

Draw a schematic diagram of a circuit consisting of a three cells of 2v each,a 5ohm resistor an 8ohm

03:57

An electric lamp whose resistance is 20ohm and a conductor of 4ohm resistance are connected to a 6v

04:58

A uniform thin metal plate of mass 10kg with dimensions shown.The ratio of x and y coordinates of

01:37

A wire of given material having length l and area of cross-section A has a resistance of 4ohm.what

01:41

The potential difference between the terminals of an electric heater is 60v when it draws a current

01:52

a)How much current will an electric bulb draw from a 220v source,if the resistance of the bulb filam

00:55

How much work is done in moving a charge of 2c across two points having a potential difference 12v?

01:37

A current of 0.5A is drawn by a filament of an electric bulb for 10 minutes.Find the amount of elect

02:58

In a system of two particles of masses M1=3kg,M2=2kg are placed at certain distance from each other

03:34

A.body falling under gravity covers two points A and B separated by 80m in 2s.The distance

03:01

An automobile travelling at 40kmph,can be. stopped at a distance of 40m by applying brakes,if the

03:13

The velocity of the bullet becomes one third after it penetrates 4cm in a wooden block. Assuming

03:11

An elastic spring under tension of 3N has a length a. It's length is b under tension 2N.For its

04:08

A stationary particle breakes into two parts of masses mA and mB which move with velocities vA and

05:57

A block is simply released from the top of an inclined plane as shown in the figure above.The maxim

03:49

A clock has 75cm,60cm long second hand and minute hand respectively.In 30 minutes duration,the

03:46

The resistances of the platinum wire of a resistance thermometer at that ice point and steam point

03:03

Two wires A and B are made up of same material and have same mass.Wire A has radius 2.0mm and wire

01:47

A particle of mass m moves on a straight line with its velocity increasing with distance according

02:20

A player caught a cricket ball of mass 150g moving at a speed of 20 m/s if the catching process is

01:52

A particle initially at rest starts moving from reference point x=0 along x axis, with velocity v

03:08

The radius (r),. length (l) and resistance (R) of a metal wire was measured in the laboratory as r=

02:22

A particle is pushed at the point A of a frictionless track ABC as shown in figure.It is gently push

02:30

A body is moving unidirectionally under the influence of a constant power source.Its displacement in

03:07

A body of mass 2kg begins to move under the action of a time dependent force given by F=(6ti+6t^2j)N

03:03

A block of mass 1kg is pushed up a surface inclined to horizontal at an angle of 60° by a force of

02:17

A block of mass 100kg slides over a distance of 10m on a horizontal surface.If the coefficient of

02:26

A bullet of mass 50g is fired with a speed 100m/s on a plywood and emerges with 40m/s.The percentage

01:27

Two bodies of mass 4g and 25g are moving with equal kinetic energies.The ratio of magnitude of their

02:04

Three bodies A,B and C have equal kinetic energies and their masses are 400g,1.2kg and 1.6kg respec

01:21

Four particles A,B,C,D of mass m/2,m ,2m,4m have same momentum, respectively.The particle with max

02:15

when kinetic energy of a body becomes 36 times of its original value the percentage increase in the

02:19

A force of (3x^2+2x-5)N displaces a body from x=2m to 4m. work done by this force is -------- J.