PHYS152 Lab 3: Electric Fields Pre-Lab Questions drtra Information from Section

Question

PHYS152 Lab 3: Electric Fields Pre-Lab Questions drtra Information from Section 15.1 may prove helpful in answering these questions) . Write the expression for electric field at a distance r due following charge distribution a. A Point Charge Q: b. Line of Charge with total charge Q: 2. If observation location for electric field is too far in distance compared to the length of a line of charge, the expression for electric field due to line charge reduces to that of (or write the expression below).

Explanation / Answer

1.

a)

electric field by a point charge "Q" at distance "r" is given as

E = k Q/r2

b)

for a line of charge , electric field is given as

E = k Q/(r sqrt(r2 + (L/2)2))

where r = distance from the line of charge

L = length

2.

E = k Q/r2

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