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Class 12 · Physics · Easy
→What is the main reason for zero net force on a dipole in a uniform electric field?
Class 12 · Physics · Easy
→In which position is a dipole in unstable equilibrium?
Class 12 · Physics · Easy
→In which position is a dipole in stable equilibrium?
Class 12 · Physics · Easy
→What is the role of torque on a dipole in a uniform electric field?
Class 12 · Physics · Easy
→What is the direction of electric dipole moment?
Class 12 · Physics · Easy
→When is the torque on a dipole in a uniform electric field maximum?
Class 12 · Physics · Easy
→What is generally the net force on an electric dipole placed in a uniform external electric field?
Class 12 · Physics · Expert
→In an expert level multiple charge problem why should mutual forces between external charges not be added to the net force on the target?
Class 12 · Physics · Medium
→A target charge is at the centre of a square. Equal positive charges are placed at one pair of opposite corners and equal negative charges at the other pair of opposite corners. If all charge magnitudes are equal, what is the net force on the target?
Class 12 · Physics · Medium
→Equal charges are placed at all four corners of a square. For a charge at one corner, how does the force due to the opposite corner compare with the force due to an adjacent corner?
Class 12 · Physics · Easy
→A negative target charge has a negative charge above it and a positive charge below it, both at equal distance and with equal magnitude. What is the direction of the net force on the target?
Class 12 · Physics · Easy
→A positive target charge has a positive charge above it and a negative charge below it, both at equal distance and with equal magnitude. What is the direction of the net force on the target?
Class 12 · Physics · Easy
→A target experiences an 80 N force southward and an 18 N force eastward. In which direction is the resultant force?
Class 12 · Physics · Medium
→Two charges repel each other. If the magnitudes of both charges become one-eighth and the sign of only one charge is reversed, what happens?
Class 12 · Physics · Medium
→Two charges attract each other. If one charge is made 15 times larger and the sign of the other charge is reversed, what will be the nature and magnitude of the force?
Class 12 · Physics · Medium
→The distance between two equal charges is reduced to one-eighth. To keep the force unchanged, what should each charge become?
Class 12 · Physics · Medium
→Two equal charges separated by distance 6 produce a certain force. If the distance is increased to 12, by what factor must each charge change to produce the same force?
Class 12 · Physics · Easy
→If the vector sum of three forces is zero and the first two perpendicular forces are 28 N and 96 N, what is the magnitude of the third force?
Class 12 · Physics · Medium
→Two external charges exert perpendicular forces of 20 N and 99 N on a target charge. What is the magnitude of the resultant force?
Class 12 · Physics · Medium
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