Contribute & Test Your Skills
- Unit, Dimension & Measurement
- Motion In One Dimension
- Thermodynamics
- Work, Energy & Power
- Rotational Motion
- Gravitation
- Laws of Motion
- Properties of Solids & Liquids
- Electronic Devices
- Kinetic Theory of Gases
- Wave Motion
- Communication Systems
- Current Electricity & Heating Effect
- Magnetic Effects of Current & Magnetism
- Electromagnetic Induction & Alternating Currents
- Electromagnetic Waves
- Optics Photometry
- Transmission of Heat
- Electrostatics
- Atomic Structure
- Mechanical Properties of Fluids
- Thermal Properties of Matter
- Circular Motion
- Projectile Motion
- Friction
- Properties of Bulk Matter
- Surface Tension
- Simple Harmonic Motion
- Capacitor
- Alternating Current
- Electron, Photon & X-Ray
- Nuclear Physics
- Valve Electronics
- Optical Instrument
- Reflection of Light
- Refraction of Light
- Wave Optics
- Mathematics In Physics
Popular Questions
- A current I flows in an infinitely long wire with cross-section in the form of a semicircular ring of radius R. The magnitude of t..
- A hot wire ammeter reads 10 A in an AC circuit. The peak value of the current will be
- A capacitor and an inductance coil are connected in separate AC circuits with a bulb glowing in both the circuits. The bulb glows ..
- The maximum voltage in DC circuit is 282V.The effective voltage in AC circuit will be
- In an AC circuit, the current lags behind the voltage by pie/3. The components of the circuit are
- The maximum value of AC voltage in a circuit is 707 V. Its rms value is
- An inductance 1 H is connected in series with an AC source of 220 V and 50 Hz. The inductive reactance (in ohm) is
- The peak value of an alternating current is 5 A and its frequency is 60 Hz. Find its rms value and time taken to reach the peak va..
- A telephone wire of length 200 km has a capacitance of 0.014 uF per km. If it carries an AC frequency 5 kHz, what should be the va..
- A pure inductive coil of 30 mH is connected to an AC source of 220 V, 50 Hz. The rms current in the coil is
- In an a.c. circuit the instantaneous e.m.f. and current
- The peak value of an alternating current is 5 A and its frequency is 60 Hz. Find its rms value and time taken to reach the peak va..
- The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is
- Average power in the L - C–R circuit depends upon the
- Same current is flowing in two alternating circuits. The first circuit contains only inductance and the other contains only a capa..
- An ideal choke draws a current of 8 A when connected to an AC supply of 100 V, 50 Hz. A pure resistor draws a current of 10 A when..
- In an L-C-R series AC circuit, the voltage across each of the components L, C and R is 50 V. The voltage across the L-C combinatio..
- In a circuit, the current lags behind the voltage by a phase difference of pie/ 2, the circuit will contains which of the followin..
- What is the average value of the AC voltage over one complete cycle?
- In Colpitt oscillator the feedback network consists of
- Alternative emf of E = 220 root 2 sin 100 t is applied on a capacitor 1 u then current is
- An arc lamp requires a direct current of 10 A
- For an RLC circuit driven with voltage of amptitude
- In L-C-R circuit if resistance increases, quality factor
- Alternating current cannot be measured by DC ammeter because
- In the LCR circuit as shown below both switches
- A choke is preferred to a resistance for limiting current in AC circuit, because
- If an alternating voltage is represented as E= 141 sin (628 t), then the rms value of the voltage and the frequency are respective..
- An LCR circuit is equivalent to a demand pendulum
- A fully charged capacitor C with initial charge
- In a series LCR circuit R=200 ohm and the voltage
- The current voltage relation of diode is given by I = (e^l000V/T - 1) mA, where the applied voltage V is in volt and the temperatu..
