Answer:
The potential between the plates will decrease.
Explanation:
An insulator is usually placed between the parallel plates and is also called a dielectric because it makes the amount of charge a capacitor can accommodate to increase at a particular potential difference.
Furthermore, the dielectric effect will make the electric field of the charged capacitor which is not connected to a source of supply to decrease.
Now, when the battery is removed, the charge Q remains constant and Capacity C will increase.
Formula for the potential difference is here;
V = Q/C
Since the numerator Q is constant and the denominator C increases, it means the potential difference V will decrease
Answer:
5 N
Explanation:
Given that,
A large bar magnet of mass 0.4 kg exerts a 5 N force on a small bar magnet (mass of 0.1 kg) located 20 cm away.
We need to find the force exerted by the small bar magnet on the large one.
We know that, every action has an equal and opposite reaction. Both action and reaction occur in pairs. The force acting on one object to another is same and in opposite direction on the other object.
Hence, the force exerted by the small bar magnet on the large one is also 5 N.
Answer:
The correct option is b
Explanation:
From the question we are told that
The resistance of the first resistor is
The resistance of the second resistor is
The capacitive reactance of the first capacitor is
The capacitive reactance of the first capacitor is
Generally given that the resistors are connected in parallel , their equivalent resistance is
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Generally given that the capacitors are connected in parallel , their equivalent capacitive reactance is
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=>
Hence the impedance of the circuit is
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Generally from the impedance equation , the total used resistance is