HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Physics

If m₀ and L denote the orbital angular moment and the angular momentum of the electron due to its orbital motion, then the gyromagnetic ratio is given by ______ 

Relative permeability of iron 5500, then its magnetic susceptibility will be ______ 

Give gyromagnetic ratio. 

The relative permeability of a medium is 0.075. What is its magnetic susceptibility? 

Derive the quantity for Bohr magneton and also state its value.

Calculate the gyromagnetic ratio of electrons.

(given e = 1.6 × 10^-19 C, m_c = 9.1 × 10^-31 kg)

Define gyromagnetic ratio.

Find relation for Bohr magneton.

When a plate of magnetic material of size 10 cm × 0.5 cm × 0.2 cm (length, breadth, and thickness respectively ) is located in the magnetizing field of 0.5 × 10⁴ Am^-1 then a magnetic moment of 5 Am² is induced in it. Find out magnetic induction in the plate.   

Find the relative permeability, if the permeability of metal is 0.1256 TmA^-1 

An electric current in an LC – circuit at resonance is called - ______ 

If AC voltage is applied to a pure capacitor, then the voltage across the capacitor ______  

An electric bulb operates 10 V d.c. If this bulb is connected to an a.c. source and gives normal brightness, then the peak value of the source is ______ 

A coil of resistance 300Ω and inductance 1.0 H is connected across an alternating voltage of frequency `300/(2pi)` Hz, therefore phase difference between the voltage and current in the circuit is ______ 

Define capacitive reactance.

State the equation for impedance Z in an A.C. circuit.

If the peak value of an alternating emf is 15V, what is its mean value over half cycle?

Explain term impedance and state the formula for it in the case of an LCR series circuit.

A series LCR circuit has resistance 10Ω and reactance is `7sqrt2` Ω. What is the impedance of the circuit?

Find the current in a circuit consisting of a coil and a capacitor in series with an A.C source of 110V (r.m.s.), 60Hz. The inductance of a coil is 0.80 H and its resistance is 50Ω. The capacitance of a capacitor is 8µF.