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3 cards from this section. Quick, good the night before a test.
Write the formula for electric field strength.
What do we divide by to find the strength?
What does ε0 stand for?
Remember, it's a constant related to electric fields.
What is the formula for calculating electric field strength?
Think about what you are dividing to calculate strength.
True or False: The vacuum permittivity is a constant that matters when calculating electric fields.
Refer back to the constant used in formulas.
A charge of +4µC is placed 1.5m away from a point. Calculate the electric field strength at that point.
Don't forget to square the distance.
You have two charges, +5µC and -3µC, separated by 2m. How does the electric field behave between them?
Visualize how charges attract or repel each other.
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