Advertisements
Advertisements
प्रश्न
Define capacitor reactance. Write its S.I units.
Advertisements
उत्तर
Capacitor reactance is the resistance offered by a capacitor when it is connected to an electric circuit. It is given by
`X_C=1/(omegaC)`
where
ω = Angular frequency of the source
C = Capacitance of the capacitor
The SI unit of capacitor reactance is ohm (Ω).
APPEARS IN
संबंधित प्रश्न
The outer cylinders of two cylindrical capacitors of capacitance 2⋅2 µF each, are kept in contact and the inner cylinders are connected through a wire. A battery of emf 10 V is connected as shown in figure . Find the total charge supplied by the battery to the inner cylinders.

Find the equivalent capacitance of the infinite ladder shown in figure between the points A and B.

A capacitor of capacitance 10 μF is connected to a battery of emf 2 V. It is found that it takes 50 ms for the charge of the capacitor to become 12.6 μC. Find the resistance of the circuit.
The two square faces of a rectangular dielectric slab (dielectric constant 4⋅0) of dimensions 20 cm × 20 cm × 1⋅0 mm are metal-coated. Find the capacitance between the coated surfaces.
The figure show a network of five capacitors connected to a 10V battery. Calculate the charge acquired by the 5μF capacitor.

Three capacitors C1 = 3μF, C2 = 6μF, and C3 = 10μF are connected to a 50 V battery as shown in Figure below:

Calculate:
(i) The equivalent capacitance of the circuit between points A and B.
(ii) The charge on C1.
Explain in detail the effect of a dielectric placed in a parallel plate capacitor.
The positive terminal of 12 V battery is connected to the ground. Then the negative terminal will be at ______.
A capacitor of 4 µ F is connected as shown in the circuit (Figure). The internal resistance of the battery is 0.5 Ω. The amount of charge on the capacitor plates will be ______.

The displacement current of 4.425 µA is developed in the space between the plates of the parallel plate capacitor when voltage is changing at a rate of 106 Vs-1. The area of each plate of the capacitor is 40 cm2. The distance between each plate of the capacitor is x × 10-3 m. The value of x is ______.
(Permittivity of free space, ε0 = 8.85 × 10-12C2N-1m-2).
