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3 cards from this section. Quick, good the night before a test.
Define an electric field.
Think about how charges interact with each other.
What does electric potential measure?
Consider what happens when moving a charge against an electric field.
What is the formula for electric field strength?
Think about how charge affects the force.
True or False: Electric potential is always a positive value.
Consider how charges interact when bringing them closer.
A charged particle is placed in a uniform electric field of strength 100 N/C. Calculate the force experienced by a particle with charge +3 μC.
Remember to use the formula for electric force on a charge.
A long straight wire carries a current of 30 A. Find the magnetic field strength 1 meter away from the wire. Use μ₀ = 4π x 10^-7 Tm/A.
Substitute the values correctly into the formula.
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