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PHS1002 Physics for Engineering - Malaysia S1 2025

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A charged particle moves in a circle in a plane perpendicular to a uniform magnetic field. Which of the following statement is FALSE?

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Question 4 (cont.)

(c)   

What is the total charge on the

outer surface of the blue metal shell?

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Question 4 (cont.)

(b)   

What is the total charge on the

inner surface of the blue metal shell?

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Question 4

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The blue spherical metal shell, which

is in electrostatic equilibrium, carries a net charge of +3 Coulomb.

 

(a)   

What is the net electric flux through

the spherical Gaussian surface (the cross section is shown as the red dash

circle)?

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Question 3

There is a uniform electric field everywhere. The field direction

is +y and the field magnitude is 2 N/C.

(a)  

What is the direction of the electric force exerted on a proton by

this electric field?

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Question 3 (cont.)

(b)  

Calculate the magnitude of the electric force on the proton.

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Question 1 (cont.)

(b)  

For a spherical GS inside the spherical thin shell, calculate the

magnitude of the electric field on the Gaussian surface.

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Question 2

A charged square box (with side length 0.5 m) carries a total

charge of 5 Coulomb that is distributed uniformly over its volume. Suppose we

place a Gaussian surface, shaped as a square box (with side length 0.2 m),

entirely inside the charged square box. Calculate the net charge inside the

Gaussian surface.

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Question 1

A total positive charge is uniformly distributed on the surface of a spherical

thin shell (the cross section of the shell is shown as the black circle in

Figure 1). The red circle, which is concentric with the black circle, is the

cross section of a spherical Gaussian surface (GS). The spherical GS can be

placed inside or outside the spherical thin shell.

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                            Figure 1

(a)   

Consider a spherical GS, with radius 0.2 m, which is outside the spherical

thin shell. The electric field on the spherical GS is uniform, radial in

direction with magnitude 5 N/C. Calculate the total charge on the spherical

thin shell.

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Question 4

A small satellite was launched

straight up from the surface of the earth into orbit at very high speed. If the

satellite has a speed of 500 m/s at a height of 400 km (height is relative to

the surface), what was the launch speed of the satellite?

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Ignore air resistance. The mass

and radius of earth is

5.98 x 1024 kg and 6.37 x 106 m

,

respectively.

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