Concept explainers
(a)
The point along x-axis at which electric field is zero.
(a)
Answer to Problem 22P
The answer is
Explanation of Solution
Given data:
Charge
Charge
Formula used:
It is known that:
Where,
Calculation:
Due to an inverse square nature of the electric field it is zero at any location that is closer to weaker charge. In following diagram the point ‘x’ is taken as where charge are weaker. Taking right as the positive direction
Rewrite the formula
Substitute the data,
Conclusion:
(b)
The point along x-axis at which the potential is zero.
(b)
Answer to Problem 22P
The answers are
Explanation of Solution
Given data:
Charge
Charge
Voltage,
Resistance,
Formula used:
It is known that:
Where,
Calculation:
Since potential is zero, hence the positive charge is must be closer to charge. Let
Apply the formula and substitute the data
Conclusion: At both locations
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