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A 10.0nCcharge is located at position (x,y)=(1.0cm,2.0cm). At what (x,y)position(s) is the electric field

  1. localid="1648545048454" 225,000i^N/C
  2. localid="1648545057140" (161,000i^+80,500j^)N/C
  3. (21,600i^28,800j^)N/C

Short Answer

Expert verified
  1. (x,y)=(-1.0cm,2.0cm)
  2. (x,y)=(3.0cm,3.0cm)
  3. (x,y)=(4.0cm,-2.0cm)

Step by step solution

01

Part (a) Step 1: Given Information

Given charge =q=10.0nC=10.010-9C

Given electric field=E=225,000i^N/C

The position of the point charge is (x,y)=(1.0cm,2.0cm)

Hence, the diagram in space of the charged particle can be made as:

02

Part (a) Step 2: Calculation

The given electric field has a negative charge, which indicates that the point is located on the left-hand side in the x-direction. The given electric field has only i^component, which means it has only an x-component. Also, it means that the y-component is zero, and hence its y-coordinates won't change.

The magnitude of the electric field at a point is given by the equation:

E=140qr2

By rearranging the terms, we get the equation of r as:

r=140qE

By substituting the value in the above equation, we get,

localid="1648546847383" r=9.010910109225000r=0.02m=2.0cm

Hence, the x-coordinate can be calculated as:

x=1.0-rx=1.0-2.0x=-1.0cm

Therefore, the position is(x,y)=(-1.0cm,2.0cm)

03

Part (a) Step 3: Final answer

Thus, the position of the given electric field is(x,y)=(-1.0cm,2.0cm).

04

Part (b) Step 1: Given Information

Given charge =q=10.0nC=10.010-9C

Given electric field=E=(161,000i^+80,500j^)N/C

The position of the point charge is(x,y)=(1.0cm,2.0cm)

Hence, the diagram in space of the charged particle can be made as:

05

Part (b) Step 2: Calculation

From the given form of the electric field, it can be said that it has two components i.e. an x-component and a y-component. Hence, the net electric field can be calculated as:

E=(x-component)2+(y-component)2E=1610002+805002E=180003.4N/C

The magnitude of the electric field at a point is given by the equation:

E=140qr2

By rearranging the terms, we get the equation of r as:

r=140qE

By substituting the value in the above equation, we get,

r=9.010910109180003.4r=0.022m=2.2cm

And, the angle between the position of the electric field and the point charge can be calculated as:

=tan-180500/161000=26.56

Hence, the distance from x can be calculated as:

x=rcosx=2.2cos26.56x=2.0cm

And, the distance from y can be calculated as:

y=rsiny=2.2sin26.56y=1.0cm

Therefore, the coordinates can be calculated as:

(x,y)=(1.0+2.0cm,2.0+1.0cm)(x,y)=(3.0cm,3.0cm)

06

Part (b) Step 3: Final answer

Thus, the position of the given electric field is(x,y)=(3.0cm,3.0cm).

07

Part (c) Step 1: Given Information

Given charge =q=10.0nC=10.010-9C

Given electric field =E=(21,600i^28,800j^)N/C

The position of the point charge is (x,y)=(1.0cm,2.0cm)

Hence, the diagram in space of the charged particle can be made as:

08

Part (c) Step 2: Calculation

From the given form of the electric field, it can be said that it has two components i.e. an x-component and a y-component. Also, the y-component is negative, therefore, the position of the electric field is on the downward side of the given charge. The net electric field can be calculated as:

E=(x-component)2+(y-component)2E=216002+288002E=36000N/C

The magnitude of the electric field at a point is given by the equation:

E=140qr2

By rearranging the terms, we get the equation of r as:

r=140qE

By substituting the value in the above equation, we get,

r=9.01091010936000r=0.05m=5.0cm

And, the angle between the position of the electric field and the point charge can be calculated as:

=tan-128800/21600=53.13

Hence, the distance from x can be calculated as:

x=rcosx=5.0cos53.13x=3.0cm

And, the distance from y can be calculated as:

y=rsiny=5.0sin53.13y=4.0cm

Therefore, the coordinates can be calculated as:

(x,y)=(1.0+3.0cm,2.0-4.0cm)(x,y)=(4.0cm,-2.0cm)

09

Part (c) Step 3: Final answer

Thus, the position of the given electric field is (x,y)=(4.0cm,-2.0cm).

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