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Two positive charges Q1 and Q2 are fixed at A and B. A unit positive charge is taken from A to B along the line joining AB. The force experienced by unit charge
- a)Decreases continuously
- b)Increases continuously
- c)Increases first and then decreases
- d)Decreases first and then increases
Correct answer is option 'D'. Can you explain this answer?
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Two positive charges Q1 and Q2 are fixed at A and B. A unit positive ...
The force experienced by a unit positive charge when it is taken from point A to point B along the line joining the two fixed positive charges Q1 and Q2 depends on the relative positions of the charges. Let's analyze the different scenarios to understand this.
1. When the unit positive charge is closer to charge Q1:
- Initially, when the unit positive charge is very close to charge Q1, the force experienced by it is mainly due to the repulsion between Q1 and the unit charge.
- As the unit charge moves towards point B, the distance between it and charge Q1 increases. As a result, the force experienced by the unit charge due to Q1 decreases.
- At point B, when the unit charge is at the same distance from both Q1 and Q2, the force experienced by it due to Q1 is zero.
2. When the unit positive charge is closer to charge Q2:
- Initially, when the unit positive charge is very close to charge Q2, the force experienced by it is mainly due to the repulsion between Q2 and the unit charge.
- As the unit charge moves towards point B, the distance between it and charge Q2 decreases. As a result, the force experienced by the unit charge due to Q2 increases.
- At point B, when the unit charge is at the same distance from both Q1 and Q2, the force experienced by it due to Q2 is maximum.
Based on the above analysis, we can conclude that the force experienced by the unit positive charge first decreases and then increases as it moves from point A to point B along the line joining AB. Therefore, the correct option is "d) Decreases first and then increases".
1. When the unit positive charge is closer to charge Q1:
- Initially, when the unit positive charge is very close to charge Q1, the force experienced by it is mainly due to the repulsion between Q1 and the unit charge.
- As the unit charge moves towards point B, the distance between it and charge Q1 increases. As a result, the force experienced by the unit charge due to Q1 decreases.
- At point B, when the unit charge is at the same distance from both Q1 and Q2, the force experienced by it due to Q1 is zero.
2. When the unit positive charge is closer to charge Q2:
- Initially, when the unit positive charge is very close to charge Q2, the force experienced by it is mainly due to the repulsion between Q2 and the unit charge.
- As the unit charge moves towards point B, the distance between it and charge Q2 decreases. As a result, the force experienced by the unit charge due to Q2 increases.
- At point B, when the unit charge is at the same distance from both Q1 and Q2, the force experienced by it due to Q2 is maximum.
Based on the above analysis, we can conclude that the force experienced by the unit positive charge first decreases and then increases as it moves from point A to point B along the line joining AB. Therefore, the correct option is "d) Decreases first and then increases".
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Two positive charges Q1 and Q2 are fixed at A and B. A unit positive ...
Force on charge first decrease then increase.
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Two positive charges Q1 and Q2 are fixed at A and B. A unit positive charge is taken from A to B along the line joining AB. The force experienced by unit chargea)Decreases continuouslyb)Increases continuouslyc)Increases first and then decreasesd)Decreases first and then increasesCorrect answer is option 'D'. Can you explain this answer?
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