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If 220 V potential difference is appled across an electric bulb, a current of 0.45 A flows in the bulb. What must be the power of the bulb ?

If 220 V potential difference is applied across an electric bulb, a current of 0.45 A flows in the bulb . What must be the power of the bulb ?

A particle is projected up a 45^(@) rough incline with a velocity v. The coeffciient of friciton is 0.5. The speed with which it returns back to the starting point is v'. Then v' // v is :

The displacemenet time graph of two moving particles make agnes of 30^(@) and 45^(@) with the x-axis. The ratio of the two velocities V _(A) and V_(B) is

The displacement-time graph for two particle A and B are straight lines inclined at angles of 45^(@) and 60^(@) with the time axis. The ratio of velocities of v_(A) and v_(B) is

If A= {3,{4,5},6} , find which of the following statements are true. (i) {4,5}subeA (ii) {4,5} in A (iii) {{4,5 }}sube A (iv) 4 in A (v) {3}sube A (vi) {phi}sube A (vii) phi sube A (viii) {3,4,5} sube A (ix) {3,6} sube A

A body of mass m is projected with velocity v at an angle of 45^(@) with the horizontal. Find the change in its momentum at the end of flight.

A cricket ball of mass m is hitted at the angle 45^(@) to the horizontal with velcoity v its kinetic energy at the topmost point is

Three capacitors are connected across a 45 V power supply as shown in fig.what is the charge on the 6 mu F capacitor?