1. A particle P has an electric charge. A distance r from P, the electric field has a strength of E. What is the magnitude of the electric field at a distance 2r from P?
2. True or false: An electric field points to the right. ALL CHARGES place in this field will move to the right.
2. True or false: An electric field points to the right. ALL CHARGES place in this field will move to the right.
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1.
Equation for E field:
E = Kq/r²
E field depends on the inverse of r², so doubling r would make E 1/4th as big.
E/4
2.
False. It should state "All positive charges." Electrons, or negatively charged objects, move in the opposite direction of E fields.
Equation for E field:
E = Kq/r²
E field depends on the inverse of r², so doubling r would make E 1/4th as big.
E/4
2.
False. It should state "All positive charges." Electrons, or negatively charged objects, move in the opposite direction of E fields.