The magnetic force on a charged particle is zero when it moves parallel to the magnetic field, as the angle θ = 0° results in sin(θ) = 0.

The spring in a moving coil galvanometer provides a restoring torque that returns the coil to its original position when the current is removed.

In a parallel RLC circuit, increasing frequency generally increases the total current due to lower reactance.

At resonance in a series RLC circuit, the inductive reactance (X_L) equals the capacitive reactance (X_C), hence X_L = X_C.

In a series RLC circuit, increasing the resistance decreases the bandwidth because the quality factor (Q) is inversely proportional to resistance.

Increasing the resistance in a series RLC circuit decreases the bandwidth of the resonance peak.

Increasing the resistance in a series RLC circuit decreases the bandwidth of the resonance because the quality factor (Q) is inversely proportional to resistance.

At resonance, the current is maximum in a series RLC circuit.

Beyond the resonant frequency, the circuit becomes more inductive, causing the current to decrease.

At resonance in a series RLC circuit, the total impedance (Z) is equal to the resistance (R) because the inductive and capacitive reactances cancel each other out.

The condition for resonance in a series RLC circuit is ωL = 1/ωC.

Two parallel wires carrying currents in the same direction experience an attractive force between them.

Inside a long solenoid, the magnetic field is uniform and directed along the axis of the solenoid.

The magnetic field inside a solenoid is uniform and directed along the axis of the solenoid.

The magnetic field inside a solenoid is directed from the north pole to the south pole of the solenoid.

The magnetic field inside a solenoid carrying current is given by B = μ₀nI, where n is the number of turns per unit length.

The magnetic field inside a solenoid is directly proportional to the number of turns per unit length, so it doubles.

The length of the solenoid does not affect the strength of the magnetic field inside it; it is determined by the number of turns per unit length, the current, and the permeability of the core material.

The magnetic field strength inside a solenoid is directly proportional to the number of turns per unit length, so doubling the turns doubles the magnetic field strength.

Increasing the number of turns per unit length in a solenoid increases the magnetic field strength.

Inside a long solenoid, the magnetic field is given by B = μ₀nI, where n is the number of turns per unit length.

Using Ampere's Law, B = μ₀NI/2πr inside a toroidal solenoid.

The magnetic field strength in a toroidal solenoid is directly proportional to the number of turns per unit length.

The magnetic field inside a toroidal solenoid is uniform and non-zero, depending on the current and the number of turns.

The magnetic field inside a toroidal solenoid is given by B = μ₀nI, where n is the number of turns per unit length along the circular path.

The magnetic field inside a toroidal solenoid is given by B = μ₀nI.

In a transformer, the voltage ratio is directly proportional to the turns ratio. Therefore, if the secondary coil has more turns, the secondary voltage will be greater than the primary voltage.

The voltage ratio in a transformer is given by Vp/Vs = Np/Ns, so Vp/Vs = 100/200 = 1/2, hence Vs = 2Vp.

The voltage ratio in a transformer is given by the turns ratio: Vp/Vs = Np/Ns. Here, Vp = 2Vs.

The voltage ratio in a transformer is equal to the turns ratio: V1/V2 = N1/N2. Here, V1/V2 = 100/50 = 2.