Edexcel Physics Radial fields (Flashcards)

What is the equation for the electric field strength of radial fields?

Electric field strength = constant k x charge / radius squard (E = kQ / r^2)

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When drawing a radial electric field, what three things should you remember?

You should draw at least 4 lines, the lines should be an equal distance away from each other and arrows should be included/

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What is the field strength at a point 2 cm from a charge of 2x10^-6 in air? (k = 9x10^9)

E = kQ / r^2 = 9x10^9 x 2x10^-6 / 0.02^2 = 4.5x10^7 N

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What is Coulomb's Law and what does it apply to?

E = kQ1Q2 / r^2. It is used when calculating the electric field strength of radial fields.

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What other equation is Coulomb's Law very similar to?

The law of gravitation F = Gm1m2 / r^2.

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Other cards in this set

When drawing a radial electric field, what three things should you remember?

You should draw at least 4 lines, the lines should be an equal distance away from each other and arrows should be included/

What is the field strength at a point 2 cm from a charge of 2x10^-6 in air? (k = 9x10^9)

What is Coulomb's Law and what does it apply to?

What other equation is Coulomb's Law very similar to?

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