EASY
12th CBSE
IMPORTANT
Earn 100

A charge q=+1 µC is held at O between the points A and B such that AO=2 m and BO=1 m, as shown in Fig. (a). Calculate the potential difference  VA-VB. What will be the value of the potential difference VA-VB if the position of B is changed, as shown in Fig (b)

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Important Questions on Electrostatic Potential and Capacitance

EASY
12th CBSE
IMPORTANT

Two small spheres of radius 'a' each carrying charges +q and -q are placed at points A and B, d distance apart. Calculate the potential difference between points A and B.

EASY
12th CBSE
IMPORTANT

The sides of rectangle ABCD are 15 cm and 5 cm, as shown in Fig. Point charges of -5 µC and +2 µC are placed at the vertices B and D respectively. Calculate electric potentials at the vertices A and C. Also calculate the work done in carrying a charge of 3 µC from A to C.

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EASY
12th CBSE
IMPORTANT

Charges of 2.0×10-6 C  and 1.0×10-6 C are placed at the corners A and B of a square of side 5.0 cm, as shown in Fig. How much work will be done in moving a charge of 1.0×10-6 C from C to D against the electric field?

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EASY
12th CBSE
IMPORTANT
Calculate the potential at the centre of a square ABCD of each side 2 m due to charges 2,-2,-3 and 6 µC at four corners of it.
EASY
12th CBSE
IMPORTANT

Charges of +1.0×10-11C,-2.0×10-11 C,+1.0×10-11 C are placed respectively at the corners B, C and D of a rectangle ABCD. Determine the potential at the corner A. Given AB=4 cm and BC=3 cm.

MEDIUM
12th CBSE
IMPORTANT
ABCD is a square of side 0.2 m. Charges of 2×10-9C, 4×10-9 C, 8×10-9 C are placed at the corners A, B and C respectively. Calculate the work required to transfer a charge of 2×10-9 C from D to the centre O of the square.
EASY
12th CBSE
IMPORTANT

Positive charges of 6,12 and 24 nC are placed at the three vertices of a square. What charge must be placed at the fourth vertex so that total potential at the centre of the square is zero?

MEDIUM
12th CBSE
IMPORTANT

Two equal charges, 2.0×10-7 C each are held fixed at a separation of 20 cm. A third charge of equal magnitude is placed midway between the two charges. It is now moved to a point 20 cm from both the charges. How much work is done by the electric field during the process?