Magnetic Field & Biot Savart Law Mock Tests

27 questions available

Magnetic Field & Biot Savart Law Mock Test 1

Questions: 27

Sample Questions

CUET Physics

A transformer has 100 turns in the primary coil and 500 turns in the secondary coil. If the primary is connected to a 200 V AC source, the secondary voltage is:

A 1000 V

B 40 V

C 200 V

D 500 V

CUET Physics

The magnetic field at the centre of a circular coil of radius R with N turns carrying current I is given by:

A μ₀NI/(2R)

B μ₀NI/R

C μ₀NR/(2I)

D μ₀IR/(2N)

CUET Physics

The SI unit of inductance is:

A Farad

B Henry

C Ohm

D Tesla

CUET Physics

A circular coil of radius 0.1 m carries a current of 2 A. The magnetic field at the center of the coil is: (μ₀ = 4π × 10⁻⁷ T·m/A)

A 4π × 10⁻⁶ T

B 2π × 10⁻⁶ T

C 4π × 10⁻⁵ T

D 8π × 10⁻⁶ T

CUET Physics

In an ideal transformer, if the primary has 100 turns and the secondary has 200 turns, and the primary voltage is 220 V, the secondary voltage is:

A 110 V

B 220 V

C 440 V

D 880 V

CUET Physics

A long solenoid has 1000 turns per meter and carries a current of 2 A. The magnetic field inside the solenoid is: (μ₀ = 4π × 10⁻⁷ T·m/A)

A 8π × 10⁻⁴ T

B 4π × 10⁻⁴ T

C 2π × 10⁻⁴ T

D 8π × 10⁻³ T

CUET Physics

A current-carrying loop produces a magnetic field at its center. If the current is doubled and the radius is halved, the magnetic field at the center becomes:

A unchanged

B doubled

C halved

D four times the original

CUET Physics

Self-inductance of a coil depends on all except:

A the current through the coil

B the number of turns

C the cross-sectional area

D the permeability of the core material

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