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WorksheetsElectric fields
Total questions: 10
Worksheet time: 13mins
What is the unit of charge?
Newton
Joule
Coulomb
Farad
What is the direction of electric field at a given point?
It has same direction as the force experienced by a negative charge at a given point.
It has same direction as the force experienced by a positive charge at a given point.
It depends on the sign of charge.
It always points towards the center of the charge.
How do you define electric field?
What is the unit of electric field?
C
N/C
C/N
Cm
What is the equation for the electric field of a point charge?
E=r2kQ
E=rkQ
E=r3kQ
E=kQr
Charge q1=7.00 μC is at the origin, and charge q2=-5.00μC is on the x - axis, 0.300 m from the origin.
(a) Find the magnitude and direction of the electric field at point P, which has coordinates (0, 0.400) m.
(b) Find the force on a charge of 2.00×10^(-8) C placed at P.
Four point charges of equal magnitude but difference signs are arranged on the corners of a square as shown left. Which of the vectors shown represents the direction of the net force acting on the charge at the upper left-hand corner of the square due to the other charges?
A
B
C
D
The ratio qBqc is?
9/4
1/1
4/9
1/4
Which of the following statements must be true of the signs of the charges?
only qA and qB have the same sign.
only qA and qC have the same sign.
only qB and qC have the same sign.
Charges qB and qC have difference signs.
Which of the following is true about the sign of charge qA?
The sign of qA must be same as qB.
The sign of qA must be same as qC.
The sign of qA must be same as either qB or qC, whichever has the greater magnitude.
It is possible that qA could be either positive or negative.
