A
TRUE OR FALSE
The electric field lines between two parallel plates is RADIAL
FALSE
TRUE OR FALSE
The electric field lines around a positively charged sphere is radially outward.
TRUE
TRUE OR FALSE
The electric field lines around a negatively charged sphere is radially outward.
FALSE
TRUE OR FALSE
An electric field line shows the direction of the force on a positive charge placed at a point in a field.
TRUE
LOOK AT THE FIGURE!
The picture shows the electric field lines between two charged particles. Determine the charges of both particles!
TWO POSITIVELY CHARGED PARTICLES
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The picture shows the electric field lines between two charged particles. Determine the charges of both particles
TWO NEGATIVELY CHARGED PARTICLES
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What is the value of permittivity of free space?
ε0=8.85×10-12 F/m
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What is the value of Coulomb’s constant?
k=8.99×109 Nm2C-2
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A pair of charged parallel plates are 2 cm apart and there is a potential difference of 5 kV across the plates. What is the Electric Field Strength between the plates?
E = 250 000 V/m
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Calculate the potential difference that must be applied across a pair of parallel plates, placed 4 cm apart, to produce an electric field of 4000 V/m
V = 160 V
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A charged particle is in an electric field with electric field strength of 3.5 x 10 4 N / C where it experiences a force of 0.3 N. Calculate the charge of the particle!
Q = 8.6 x 10 -6 C
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What is the electric field strength at a distance of 5 mm away from a point charge of 1.6 nC?
E = 5.76 X 10 5 N/c
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A charged dust particle in an electric field experiences a force of 4.4 x 10- 13 N. The charge on the particle is 8.8 x 10-17 C. Calculate the electric field strength!
E = 5000 N/C
LOOK AT THE QUESTION! At what distance from a point charge of 2.00 C will the electric field strength be 4.5 x 10 9 N / C
r = 2 m
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A charged particle experience an electric field strength of 45 kN/C at a distance of 10 cm away from a point charge.
Calculate the charge of the particle!
Q = 5 x 10 -8 C
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What magnitude identical point charges would result in a force of 3.68 x 10-21 N at a distance of 5 x 10-4 m between the charges?
Q =3.2×10 -19 C
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A pair of charged parallel plates are 2 cm apart and there is a potential difference of 5 kV across the plates. A charged ion between the plates experiences a force of 1.2 × 10-13 N due to the field. Calculate the charge on the ion!
Q = 4.8 x 10 -19 C
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A charge of −4 × 10−9 C is a distance of 3 cm from a charge of 3 × 10−9 C . What is the magnitude and direction of the force between them?
1.2 × 10⁻⁴ N, and the force is attractive.
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Two charges are repelled by a force of 2.0 N. If the distance between them triples, what is the force between the charges?
Fnew = 0.22 N
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What is the distance between two electrons if there is a force of 6.2 x 10 -20 N between them?
r = 6.09 × 10⁻5 N