A. Each increase
B. Each decrease
C. Each remains the same
D. One increases whereas that in the other decreases
Correct Answer: Each decrease ✔
Last Updated: January 20, 2021
Related MCQs
- An inductor may store energy in __________?
- A voltage V = V0 cos ωt is applied across a resistor of resistance R the average power dissipated per cycle in the resistor is given by__________?
- n an LCR series circuit, if V is the effective value of the applied voltage VR is the voltage across R VL is the effective voltage across L & Vc is the effective voltage across C then__________?
- The phase angle between the voltage and the current in an AC circuit consisting of a resistance is__________?
- Choose the correct statement. In the case of AC circuit ohms law holds for__________?
- An inductive coil has a resistance of 100Ω. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45Ω. What is the inductance of the coil ?
- An A.C series circuit containing 4Ω resistance and 3Ω inductive reactance. The impedance of the circuit is__________?
- At resonance the value of the power factor in an L-C-R series circuit is__________?
- A choke is used as a resistance in__________?
- A 10Ω electric heater is connected to a 220V 50Hz mains supply. What is the peak value of the potential difference across the heater element ?
- The frequency of a circuit consisting of a capacitance C and a resistor R is__________?
- What is the self-inductance of a coil in which an induced emf of 2V is set up when the current changes at the rate of 4 As-1 ?
- When a pure inductor of inductance L and a pure capacitor of capacitance C are connected in parallel to a sinusoidal potential difference V the potential difference across both L & C will be__________?
- Ammeter connected in an AC circuit measures__________?
- A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is__________?
- If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb__________?
- A 100µF capacitor with a 12V source in series having frequency 50Hz will offer a capacitive reactance of about__________?
- In the capacitive circuit the current__________?
- When A.C current passes through a capacitor then the current relationship will be__________?
- pure resistor circuit the voltage and current are__________?
- An alternating current is represented by the equation I = I∫sinπt which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?
- To find the r.m.s value of an alternating current mathematically we need to have __________?
- A capacitor of capacitance 30µF is charged by a constant current of 10mA. If initially, the capacitor was uncharged what is the time taken for the potential difference across the capacitor to reach 300V ?
- Electromagnetic waves emitted from antenna are__________?
- Electromagnetic waves transport__________?
- The direction of propagation of an electromagnetic waves is__________?
- A changing magnetic flux produces around itself an induced__________?
- An alternating current of the r.m.s value of 4.0 A and frequency 50Hz flows in a circuit containing a 10Ω resistor. The peak current is then ?
- The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________?
- If capacitance of L-C circuit is made four times then frequency of the circuit becomes__________?
- Waves emitted from the antenna are__________?
- An electromagnetic wave consists of __________?
- Electromagnetic waves travel in free space with the speed of__________?
- An alternating current or voltage__________?