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Class 12 · Physics · Medium
→Among three forces, two are equal in magnitude and opposite in direction, while the third is perpendicular to them. To what is the net force equal?
Class 12 · Physics · Medium
→Both charges are reduced to one-third of their original values. If the electrostatic force must remain unchanged, how should the separation distance change?
Class 12 · Physics · Medium
→One of two charges is increased to 16 times its original value. If the electrostatic force must remain unchanged, how should the separation distance change?
Class 12 · Physics · Medium
→The force between two charges must become one twenty-fifth of its original value while the charges remain unchanged. What change in separation distance is required?
Class 12 · Physics · Medium
→The force between two charges must become 36 times its original value while the charges remain unchanged. What should happen to the separation distance?
Class 12 · Physics · Medium
→Two forces have equal magnitudes and the angle between them is less than 180°. Under this condition, when will their resultant force not be zero?
Class 12 · Physics · Medium
→A charge experiences a 13 N northward force, a 5 N southward force, and a 15 N eastward force. What is the magnitude of the net force?
Class 12 · Physics · Medium
→A charge experiences a 20 N eastward force, a 12 N westward force, and a 15 N northward force. After combining the east–west forces, what is the magnitude of the resultant force?
Class 12 · Physics · Hard
→Three equal negative charges lie on a straight line at equal spacing. If the left outer charge is made five times larger, in which direction will the net force on the middle charge act?
Class 12 · Physics · Hard
→Three equal positive charges lie on a straight line at equal spacing. The net force on the middle charge is initially zero. If the right outer charge is halved, in which direction will the net force on the middle charge act?
Class 12 · Physics · Hard
→If the magnitude of the target charge is made four times larger and its sign is reversed, what happens to the force due to each external charge?
Class 12 · Physics · Hard
→A negative target charge has a positive charge four times as large above it at distance 2 and a positive charge below it at distance 1. What is the direction of the net force on the target charge?
Class 12 · Physics · Hard
→A positive target charge has a negative charge nine times as large at distance 3 on its left and a negative charge at distance 1 on its right. What is the net force on the target charge?
Class 12 · Physics · Hard
→A positive target charge has a positive charge at distance 1 on its left and a negative charge nine times as large at distance 3 on its right. What is the direction of the net force on the target charge?
Class 12 · Physics · Hard
→If the electrostatic force must become twice its original value while the product of the charges becomes eight times larger, what change in separation is required?
Class 12 · Physics · Hard
→If the electrostatic force must become one-fourth and the product of the charges is also reduced to one-fourth, what change in separation is required?
Class 12 · Physics · Hard
→If the electrostatic force is to remain unchanged while the separation between two charges is made five times larger, what change is required in the product of the charges?
Class 12 · Physics · Hard
→The force between two charges in air is 80 N. In a medium, the force becomes one-fifth of its air value, while the separation is halved. If the charges remain unchanged, what is the new force?
Class 12 · Physics · Hard
→The force between two charges in air is 120 N. In a medium, the force becomes one-fourth of its air value, while both charges are doubled. What is the new force?
Class 12 · Physics · Medium
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