NEET Physics 5

Question 1

A current-carrying conductor is placed in a magnetic field. The force on the conductor is zero when the angle between the current direction and magnetic field is:

Accepted Answer

0°

Answer

The force on a conductor F = BIL sinθ is zero when θ = 0° or 180° (current parallel to field), but θ = 0° is the standard answer.

Question 2

In an AC circuit, the phase difference between voltage and current in a pure capacitor is:

Accepted Answer

Current leads voltage by 90°

Answer

In a pure capacitive circuit, the current leads the applied voltage by 90° (π/2 radians).

Question 3

The SI unit of magnetic flux is:

Accepted Answer

Weber (Wb)

Answer

Magnetic flux Φ = B·A is measured in Weber (Wb), where 1 Wb = 1 T·m².

Question 4

A transformer has 500 primary turns and 50 secondary turns. If the primary voltage is 220 V, the secondary voltage is:

Accepted Answer

22 V

Answer

Using V₂/V₁ = N₂/N₁: V₂ = 220 × (50/500) = 22 V.

Question 5

The electric field inside a charged hollow spherical conductor is:

Accepted Answer

Zero

Answer

By Gauss's law, the electric field inside a hollow charged conductor is zero because no charge resides inside.

NEET - National Eligibility cum Entrance Test Practice Test

NEET - National Eligibility cum Entrance Test Practice Test

NEET Physics 5