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USPshnik [31]
3 years ago
11

(HELP!!! 30 pts if answered right. )What formula gives the strength of an electric field, E, at a distance from a known source c

harge? E = Startfraction F Subscript e baseline over q times d Endfraction. E = Startfraction k times q over d Endfraction. E = Startfraction k times q over d Superscript 2 baseline Endfraction. E = Startfraction F Subscript e baseline over d Endfraction.
Physics
1 answer:
umka2103 [35]3 years ago
8 0

Answer:

E=\frac{k\,Q}{d^2}

Explanation:

The strength of an electric field E produced by a single charge Q at a distance d from it is given by the formula: E=\frac{k\,Q}{d^2}, where K represents the Coulomb constant.

Since the electric field E is derived from the Coulomb Force per unit charge using a positive test charge, the field's units will be in units of Newtons/Coulomb, and be the formula for the Coulomb electric force between to charges (Q1 and Q2),

F_C=k\frac{Q_1\,Q_2}{d^2}

but modified with only one charge showing in the numerator of the expression.

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3 years ago
Potential difference of a battery is 2.2 V when it is connected
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Answer:

1.1ohms

Explanation:

According to ohms law E = IR

If potential difference of a battery is 2.2 V when it is connected across a resistance of 5 ohm and if suddenly the voltage Falls to 1.8V then the current in the 5ohms resistor I = V/R = 1.8/5

I = 0.36A (This will be the load current).

Before we can calculate the value of the internal resistance, we need to know the voltage drop across the internal resistance.

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3 years ago
) In the figure below, three charges K, L and M are placed at the corners of an equilateral triangle. If K and L are fixed, in w
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Answer:

B)

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Answer:

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d_1 = 16(\frac{1}{2}gt^2)

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7 0
3 years ago
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