Q- In an AC circuit the voltage across a resistive component is given by V(t) = 10 + 5 sin (3t). Find

(a) The voltage amplitude

(b) Root mean square voltage across the component Vrms.

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Q- Three resistors (*R _{1}* = 120 Ohms,

Q- Gopal finds that a force *F* is required to push a crate of mass *m* up a plank of length *L* into a truck whose platforms is a vertical distance *h* above the road.

(a) How much work does Gopal do in pushing the crate up the plank?

(b) Calculate Gopal’s work input if the crate has a mass of 100 kg, …

Q- At t=0, a rectangular coil of resistance R = 2 ohms and dimensions w = 3 cm and L = 8 cm enters a region of constant magnetic field B = 1.6 T, directed into the screen as shown. The length of the region containing the magnetic field is L_{B} = 15 cm. The coil is observed to move at constant velocity…

The cut-off frequencies of a series resonant circuit are 5400 Hz and 6000 Hz.

(a) Find the Bandwidth of the circuit.

(b) If quality factor Q = 9.5, find the resonant frequency of the circuit.

(c) If the resistance of the circuit is 2 Ω, find the value of reactance X_{L} and X_{C} at resonance…

Q- An electromagnetic wave has a frequency of 110 MHz and is traveling in a vacuum. The magnetic field is given by **B **(*z*,* t*) = (2.00 x 10^{-8} T) cos (*k z* - *ω t*) **i**.

(a) Find the wavelength and the direction of propagation of this wave.

(b) Find t…

Q- An object is accelerating along x axis with an acceleration of 2 m/s^{2} for three 3 s and attaining a velocity of 20 m/s at an angle of 30^{0} with positive x direction.

(a) Calculate magnitude of initial velocity of the object.

(b) Find the direction of initial velocity vector.

Q- A 100 µF capacitor is connected in turn to two different sinusoidal voltages of the same amplitude V = 1.0V but different frequencies with f_{1} = 50Hz and f_{2} = 5kHz.

(a) Calculate the reactance X_{1} and X_{2}

(b) By what factor is X_{1} greater than X_{2} ?

(c) Calculate the amplitudes of the associated c…

Q- An airplane with a speed of 75 m/s is climbing upward at an angle of 37.0 ° with respect to the horizontal. When the plane's altitude is 600 m, the pilot releases a package.

**(a)** Calculate the distance along the ground, measured from a point directly beneath the point of release, to where the p…

20 .

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## Comments

Abhigyan Martin NinamaRohit DewalAjay kumar