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qUESTIONS

Three point charges are placed at the vertices of a right isosceles triangle as shown in the Fig. a. What is the magnitude and direction of the resultant electric field at point P which is the mid point of its hypotenuse?

Gap between two electrodes of the spark-plug used in an automobile engine is 1.25 mm. If the potential of 20 V is applied across the gap, what will be the magnitude of electric field between the electrodes?

Three charges of 2μC, 3μC and 4μC are placed at points A, B and C respectively, as shown in Fig. a. Determine the force on A due to other charges.

Calculate and compare the electrostatic and gravitational forces between two protons which are 10^-15 m apart. Value of G = 6.674×10^-11 m3 kg6-1 s^-2 and mass of the proton is 1.67×106-27 kg

How much positive and negative charge is present in 1gm of water? How many electrons are present in it? Given, molecular mass of water is 18.0 g.

Charge on an electron is 1.6×10-19 C. How many electrons are required to accumulate a charge of one coulomb?

A charge +q exerts a force of magnitude -0.2 N on another change -2q. If they are separated by 25.0 cm, determine the value of q

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