## Ohms Law for a Magnetic Circuit mcq

Ohm’s Law for a magnetic circuit relates which two variables?

a) Voltage and resistance

b) Current and resistance

c) Magnetic field strength and resistance

d) Magnetomotive force and reluctance

Answer: b) Current and resistance

Ohm’s Law for a magnetic circuit states that the current in a magnetic circuit is:

a) Directly proportional to the magnetic field strength

b) Inversely proportional to the magnetic field strength

c) Directly proportional to the reluctance

d) Inversely proportional to the reluctance

Answer: a) Directly proportional to the magnetic field strength

The formula for Ohm’s Law in a magnetic circuit is:

a) I = B/R

b) I = R/B

c) I = B × R

d) I = B/R

Answer: c) I = B × R

In Ohm’s Law for a magnetic circuit, the quantity “I” represents:

a) Voltage

b) Current

c) Magnetic field strength

d) Magnetic flux

Answer: b) Current

In Ohm’s Law for a magnetic circuit, the quantity “B” represents:

a) Voltage

b) Current

c) Magnetic field strength

d) Magnetic flux

Answer: c) Magnetic field strength

In Ohm’s Law for a magnetic circuit, the quantity “R” represents:

a) Voltage

b) Current

c) Magnetic field strength

d) Reluctance

Answer: d) Reluctance

Ohm’s Law for a magnetic circuit is analogous to Ohm’s Law for an electrical circuit because both laws relate:

a) Voltage and resistance

b) Current and resistance

c) Voltage and current

d) Voltage and capacitance

Answer: b) Current and resistance

The unit of measurement for resistance in a magnetic circuit is:

a) Tesla

b) Henry

c) Ampere

d) Ohm

Answer: d) Ohm

The unit of measurement for magnetic field strength in Ohm’s Law for a magnetic circuit is:

a) Tesla

b) Henry

c) Ampere

d) Ohm

Answer: a) Tesla

The unit of measurement for current in Ohm’s Law for a magnetic circuit is:

a) Tesla

b) Henry

c) Ampere

d) Ohm

Answer: c) Ampere

The resistance in a magnetic circuit is determined by the:

a) Magnetic field strength

b) Current

c) Length and cross-sectional area of the magnetic circuit

d) Permeability of the magnetic material

Answer: c) Length and cross-sectional area of the magnetic circuit

In Ohm’s Law for a magnetic circuit, an increase in magnetic field strength will result in:

a) An increase in current

b) A decrease in current

c) No change in current

d) Insufficient information to determine

Answer: a) An increase in current

In Ohm’s Law for a magnetic circuit, an increase in reluctance will result in:

a) An increase in current

b) A decrease in current

c) No change in current

d) Insufficient information to determine

Answer: b) A decrease in current

Ohm’s Law for a magnetic circuit assumes that the magnetic material behaves:

a) Linearly

b) Non-linearly

c) Capacitively

d) Inductively

Answer: a) Linearly

Ohm’s Law for a magnetic circuit is applicable to which type of magnetic materials?

a) Ferromagnetic materials

b) Diamagnetic materials

c) Paramagnetic materials

d) All of the above

Answer: d) All of the above

Ohm’s Law for a magnetic circuit is commonly used in the design and analysis of:

a) Transformers

b) Inductors

c) Magnetic sensors

d) All of the above

Answer: d) All of the above

Ohm’s Law for a magnetic circuit can be used to calculate:

a) Magnetic field strength

b) Magnetomotive force

c) Reluctance

d) All of the above

Answer: d) All of the above

In Ohm’s Law for a magnetic circuit, if the resistance is doubled, the current will:

a) Double

b) Halve

c) Remain the same

d) Insufficient information to determine

Answer: b) Halve

In Ohm’s Law for a magnetic circuit, if the magnetic field strength is tripled, the current will:

a) Triple

b) Halve

c) Remain the same

d) Insufficient information to determine

Answer: a) Triple

Ohm’s Law for a magnetic circuit can be derived from:

a) Faraday’s Law

b) Ampere’s Law

c) Ohm’s Law for an electrical circuit

d) Gauss’s Law

Answer: b) Ampere’s Law

In Ohm’s Law for a magnetic circuit, the relationship between current and resistance is:

a) Directly proportional

b) Inversely proportional

c) Non-linear

d) Exponential

Answer: a) Directly proportional

Ohm’s Law for a magnetic circuit is based on the assumption that the magnetic field is:

a) Uniform

b) Varying

c) Circular

d) Oscillating

Answer: a) Uniform

Ohm’s Law for a magnetic circuit is valid for:

a) DC circuits only

b) AC circuits only

c) Both DC and AC circuits

d) Neither DC nor AC circuits

Answer: c) Both DC and AC circuits

In Ohm’s Law for a magnetic circuit, the proportionality constant between current and magnetic field strength is:

a) Magnetic permeability

b) Magnetic susceptibility

c) Magnetic flux

d) Magnetic reluctance

Answer: a) Magnetic permeability

Ohm’s Law for a magnetic circuit is a fundamental principle in the field of:

a) Electrical engineering

b) Electronics

c) Magnetism

d) All of the above

Answer: d) All of the above