1.8 Electric Field
1. The unit of intensity of electric field is
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2. The magnitude of electric field intensity E such that an electron placed in it would experience an electrical force equal to its weight is given by
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3. A charge particle is free to move in an electric field. It will travel
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4. Two charges +5 µC and +10 µC are placed 20 cm apart. The net electric field at the mid-Point between the two charges is
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5. There is an electric field E in X-direction. If the work done on moving a charge 0.2C through a distance of 2m along a line making an angle 60 degree with the X-axis is 4 J, what is the value of E?
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6. Two point charges +8q and -2q are located at x=0 and x=L respectively. The location of a point on the x-axis at which the net electric field due to these two point charges is zero is
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7. An electron moving with the speed 5 x 10^6 m/s is shot parallel to the electric field of intensity 1x10^3 N/C. Field is responsible for the retardation of motion of electron. Evaluate the distance travelled by the electron before coming to rest for an instant
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8. If e/m for an electron is 1.76 x 10^11 C/kg, then acceleration of an electron in an electric field of magnitude 50 V/cm is
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9. Three identical point charges as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vector(s) can coincide in direction with the electric field at the mid-point M of the hypotenuse
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10. Four charges are placed on corners of a square having side of 5 cm. The electric field intensity at centre will be
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