Short catching drills Indoor! #cricket #shorts #cricketcoaching #cathing #worldt20 #practice

A fuse made of lead wire has an area for cross-section 0.2mm^(2) . On short circuiting will the fuse wire reaches 32 A. How long after the short circuiting will the fuse begin to melt? For lead, specific heat capacity 134J kg^(-1)K^(-1) , melting point = 327^(@)C , relative density =11.34, initial temperature = 20^(@)C electricaL resistivity =11xx10^(-8)Omegam .

Statements : Many school buses fitted CNG kit without observing the safety guidelines properly. This results into some instances of these buses catching fire due to short circuit and endangering the lives of the school children. Course of action I. The regional transport authority should immediately carry out checks of all the school buses fitted with CNG kit. II. The management of all the schools should stop hiring buses fitted with CNG kit. III. The government should issue a notification banning school buses for use of CNG kit.

The pole strength of each pole of a short bar magnet having magnetic length 2 cm and the magnetic field produced by this magnet at a point 20 cm from the centre of the magnet on the line making an angle of 60^(@) with the axis is 3.75 xx10^(-5) Wb//m^(2) ,is

Figure shows a short magnet executing small oscillations in an oscillation magnetometer in earth's magnetic field having horizontal component 24 muT . The time period of oscillation is 0.10 s . An upward electric current of 18 A is established in the vertical wire placed 20cm east of the magnet by closing the switch S . Find the new time

While catching a cricket ball of mass 200g moving with a velocity of 20ms^(-1) , the player draws his hands backwards through 20cm. Find the work done in catching the ball and the average force exerted by the ball on the hand.

While catching a cricket ball of mass 200g moving with a velocity of 20ms^(-1) , the player draws his hands backwards through 20cm . Find the work done in catching the ball and the average force exerted by the ball on the hand.

An inductor (L =20 mH) , a resistor ( R = 100 Omega) and a battery (verepsilon = 10 V) are connected in series. After along time the circuit is short- circuited and then the battery is disconnected. Find the current in the cirucit 1ms after short- circuititig.

The frequency of oscillation of the magnet in an oscillation magnetometer in the earth's magnetic field is 40 oscillations per minute. A short bar magnet is placed to the north of the magnetometer, at a separation of 20cm from the oscillating magnet, with its north pole pointing towards north (figure). The frequency of oscillation is found to increase to 60 oscillations per minute. Calculate the magnetic moment of this short bar magnet. Horizonatl component of the earth's magnetic field is 24 muT .

A fuse made of lead wire has an area of cross-section 0.2mm^(2) . On short circuiting. The current in the fuse wire reaches 30A. How long after the short circulting will the fuse begin to melt? For lead, specific heat 0.032 "cal" g^(-1) .^(@)C^(-1) , melting point =327^(@)C , density = 11.34g cm^(-3) and the resistivity =22xx10^(-6)Omega cm. Initial temperature of the wire is 20^(@)C . Neglect heat losses.